Cryptography and Cryptography Policy

• S. Landau, Testimony, Hearing on Foreign Influence on Americans' Data Through the Cloud Act, House Judiciary Subcommittee on Crime and Federal Government Surveillance, House of Representatives, June 5, 2025.
• Harold Abelson, Ross Anderson, Steven M. Bellovin, Josh Benaloh, Matt Blaze, Jon Callas, Whitfield Diffie, Susan Landau, Peter G. Neumann, Ronald L. Rivest, Jeffrey I. Schiller, Bruce Schneier, Vanessa Teague, and Carmela Troncoso, Bugs in our Pocket: The Risks of Client-Side Scanning, Journal of Cybersecurity, Vol. 10, Issue 1, 2024.
• S. Landau, The Development of a Crypto Policy Community: Diffie–Hellman’s Impact on Public Policy, Rebecca Slayton, ed., Democratizing Cryptography: The Work of Whitfield Diffie and Martin Hellman, Association for Computing Machinery, 2022, pp. 214-256.
• Nadiya Kostyuk and Susan Landau, Dueling over Dual_EC_DRBG: The Consequences of Corrupting a Cryptographic Standardization Process, Harvard National Security Journal, Volume 13, Issue 2 (2022).
• Encryption Working Group, Carnegie Endowment for International Peace, Moving the Encryption Policy Debate Forward, September 2019.
• Committee on Law Enforcement and Intelligence Access to Plaintext Information in an Era of Widespread Strong Encryption: Options and Trade Offs, Computer Science and Telecommunications Board, National Academies of Sciences, Engineering, and Medicine, Decrypting the Encryption Debate: A Framework for Decisionmakers, 2018.
• S. Landau, Listening In: Cybersecurity in an Insecure Age, Yale University Press, 2017. Some podcasts: an in-depth Hoover Book Soiree discussion with Ben Wittes and a short Science blog interview with Jen Golbeck.
• S. Landau, The Real Security Risks of the iPhone Case, Science, Vol. 352, Issue 6292, June 17, 2016, pp. 1398-1399.
• S. Landau, Testimony, Hearing on "The Encryption Tightrope: Balancing Americans' Security and Privacy", Judiciary Committee, United States House of Representatives, March 1. 2016.
• H. Abelson, R. Anderson, S. Bellovin, J. Benaloh, M. Blaze, W. Diffie, J. Gilmore, M. Green, S. Landau, P. Neumann, R. Rivest, J. Schiller, B. Schneier, M. Specter, and D. Weitzner, Keys under Doormats: Mandating insecurity by requiring government access to all data and communications, Journal of Cybersecurity, Vol. 1, 2015.
• S. Landau, ``NSA and Dual EC_DRBG: Deja Vu All Over Again?,'' Mathematical Intelligencer, Vol. 37, Issue 4 (December 2015), pp. 72-83.
• S. Landau, Under the Radar: NSA's Efforts to Secure Private-Sector Telecommunications Infrastructure, Journal of National Security Law and Policy, Vol. 7, No.3 (2014), pp. 411-442; one section,
  ,
  was reprinted in Intelligence, translation by Junichi Hiramatsu, Vol. 15, March, 2015.
• S. Landau, Making Sense of Snowden Part II: What's Significant in the NSA Surveillance Revelations , IEEE Security and Privacy, Vol. 12, No. 1, January/February 2014; a short version, Highlights from Making Sense of Snowden Part II: What's Significant in the NSA Surveillance Revelations, (behind payment wall) appeared in IEEE Security and Privacy, Vol. 12, No. 1, January/February 2014, pp. 62-64.
• S. Bellovin, M. Blaze, S. Clark, S. Landau, Lawful Hacking: Using Existing Vulnerabilities for Wiretapping on the Internet, Northwestern Journal of Technology and Intellectual Property, Vol. 12, Issue 1 (2014).
• S. Landau, Making Sense of Snowden: What's Significant in the NSA Surveillance Revelations , IEEE Security and Privacy, Vol. 11, No. 4, July/August 2013, pp. 54-63.
• S. Bellovin, M. Blaze, S. Clark, and S. Landau, Going Bright: Wiretapping without Weakening Communications Infrastructure, IEEE Security and Privacy, Vol. 11, No. 1, January/February 2013, pp. 62-72. [Cited in New York Times editorial, May 20, 2013.]
• S. Landau, Testimony, Hearing on Going Dark: Lawful Electronic Surveillance in the Face of New Technologies, Subcommittee on Crime, Terrorism, and Homeland Security, Judiciary Committee, United States House of Representatives, February 17, 2011.
• W. Diffie and S. Landau, The Export of Cryptography in the 20th Century and the 21st, The History of Information Security: A Comprehensive Handbook, Karl De Leeuw and Jan Bergstra (eds.), Elsevier, 2007, pp. 725-736. Originally appeared in Treichel, Jeanie and Mary Holzer (eds.), Sun Microsystems Laboratories: the First Ten Years, 2001. Sun Labs Tech Report 2001-102. A modified version of this paper, September 11th Did Not Change Cryptography Policy, Notices of the American Mathematical Society, April 2002, pp. 450-454.
• S. Landau, entries for "Clipper and Capstone"; "cryptography"; "digital signatures," in William Staples, ed. Encyclopedia of Privacy, Greenwood Press, 2007.
• S. Landau, Find Me a Hash, Notices of the American Mathematical Society, March 2006, pp. 330-332; Mathematical Advance in Translation, Chinese Academy of Sciences, 3 (2010), pp. 226-228.
• S. Landau, RSA and Public-Key Cryptography; Introduction to Cryptography; Cryptography: Theory and Practice; Algebraic Aspects of Cryptography; Elliptic Curves: Number Theory and Cryptography; Elliptic Curves in Cryptography; Modern Cryptography, Probabilistic Proofs, and Pseudorandomness; Foundations of Cryptography: Basic Tools; The Design of Rijndael: AES—the Advanced Encryption Standard; Handbook of Applied Cryptography, Bulletin of the American Mathematical Society, Vol. 41, No. 3 (2004), pp. 357-367.
• S. Landau, Polynomials in the Nation's Service: Using Algebra to Design the Advanced Encryption Standard, American Mathematical Monthly, February 2004, pp. 89-117.
• W. Diffie and S. Landau, September 11th Did Not Change Cryptography Policy, Notices of the American Mathematical Society, April 2002, pp. 450-454.
• S. Landau, "Cryptography." Computer Sciences, Ed., Roger R. Flynn. Vol. 4: Electronic Universe. New York: Macmillan Reference USA, pp. 49-53.
• S. Landau, Advanced Encryption Standard Choice is Rijndael, Notices of the American Mathematical Society, Jan. 2001, p. 38.
• S. Landau, Communications Security for the Twenty-First Century: the Advanced Encryption Standard, Notices of the American Mathematical Society, April 2000, pp. 450-459. Reprinted, in translation, in "Surveys in Applied and Industrial Mathematics," TVP Publishers (Moscow), Vol. 7, No. 2 (2000), pp. 259-281.
• S. Landau, Standing the Test of Time: the Data Encryption Standard, Notices of the American Mathematical Society, March 2000, pp. 341-349. Reprinted, in translation, in "Surveys in Applied and Industrial Mathematics," TVP Publishers (Moscow), Vol. 7, No. 2 (2000), pp. 240-258.
• S. Landau, Designing Cryptography for the New Century, Communications of the Association for Computing Machinery, Vol. 43, No. 5, May 2000, pp. 115-120.
• S. Landau, Cryptography in Crisis, Commentary (In My Opinion), Notices of the American Mathematical Society, April 1998, p. 461.
• Whitfield Diffie and Susan Landau, Privacy on the Line: The Politics of Wiretapping and Encryption, MIT Press, rev. and updated edition, 2007 (orig. pub. 1998).
• S. Landau, S. Kent, C. Brooks, S. Charney, D. Denning, W. Diffie, A. Lauck, D. Miller, P. Neumann and D. Sobel, Codes, Keys, and Conflicts: Issues in U.S. Crypto Policy, ACM Press, 1994. This report, funded by the NSF, was an undertaking of the USACM Committee on Public Policy. Dr. Stephen Kent, Chief Scientist - Security Technology, Bolt, Beranek and Newman, chaired the panel, which consisted of senior members of the cryptography and security communities, including members of the government, industry, and academia. A summary of the report appeared under the title Crypto Policy Perspectives, in Communications of the ACM, Vol. 37 (Aug. 1994), pp. 115-121.
• S. Landau, Some Remarks on Computing the Square Parts of Integers, Information and Computation, Vol. 78, No. 3 (1988), pp. 246-253.
• S. Landau, Zero Knowledge and the Department of Defense, Notices of the American Mathematical Society [Special Article Series], Vol. 35, No. 1 (1988), pp. 5-12.
• S. Landau, Primes, Codes and the National Security Agency, Notices of the American Mathematical Society, [Special Article Series], Vol. 30, No. 1 (1983), pp. 7-10.

Contact-Tracing Apps, Privacy, and Equity

• Susan Landau, Digital exposure tools: Design for privacy, efficacy, and equity, Science, Vol. 373, Issue 6560, September 10, 2021.
• Susan Landau, People Count: Contact-Tracing Apps and Public Health, MIT Press, 2021.

• Weijia He, Nathan Reitinger, Denise Anthony, Chelsea Bruno, Susan Landau, Carl A. Gunter, Mounib Khanafer, and Ravindra Mangar, "Help Me Help You: Privacy Considerations for Third Party IoT Device Repair, Privacy Enhancing Technologies Symposium 2025
• Harold Abelson, Ross Anderson, Steven M. Bellovin, Josh Benaloh, Matt Blaze, Jon Callas, Whitfield Diffie, Susan Landau, Peter G. Neumann, Ronald L. Rivest, Jeffrey I. Schiller, Bruce Schneier, Vanessa Teague, and Carmela Troncoso, Bugs in our Pocket: The Risks of Client-Side Scanning, Journal of Cybersecurity, Vol. 10, Issue 1, 2024.
• D. Anthony, C.A. Gunter, W. He, M. Khanafer, S. Landau, R. Manger, and N. Reitinger, The HandyTech's Coming Between 1 and 4: Privacy Opportunities and Challenges for the IoT Handyperson (short paper), Workshop on Privacy in the Electronic Society, 2023.
• S. Landau, Testimony, Hearing of the Joint Committee on Advanced Information Technology, the Internet and Cybersecurity, State House, Commonwealth of Massachusetts, October 19, 2023.
• S. Landau and P. Vargas Leon, Reversing Privacy Risks: Strict Limitations on the Use of Communications Metadata and Telemetry Information, Colorado Technology Law Journal, Vol. 21, Issue 1 (2023), pp. 225-336.
• S.Landau, Testimony, Informational Hearing of the Joint Committee on Advanced Information Technology, the Internet and Cybersecurity, State House, Commonwealth of Massachusetts, March 2023.
• S. Landau, Testimony, Hearing on "Protecting Americans' Privacy Against Hostile Foreign Powers,", Subcommittee on Privacy, Technology, and the Law, Committee on the Judiciary, United States Senate, September 14, 2022.
• S. Landau, Categorizing Uses of Communications Metadata: Systematizing Knowledge and Presenting a Path for Privacy, New Security Paradigms Workshop, 2020.
• S. Landau and A. Lubin, Examining the Anomalies, Explaining the Value: Should the USA FREEDOM Act's Metadata Program be Extended?, Harvard National Security Journal, Vol. 11, Issue 3 (2020), pp. 308-358.
• S. Landau, If It Isn't Efficacious, Don't Do It, European Data Protection Law Review, Vol. 5, Issue 4 (2019), pp. 466-470.
• S. Landau, Comments submitted to the NTIA request for comments on privacy, October 24, 2018.
• S. Bellovin, M. Blaze, S. Landau, and S. Pell, It's Too Complicated: How the Internet Upends Katz, Smith, and Electronic Surveillance Law, Harvard Journal of Law and Technology, Vol. 30, No. 1 (2017), pp. 1-101.
• S. Landau, Is it Legal? Is it Right? The Can and Should of Use, IEEE Security and Privacy, Vol. 14, No. 5 (September/October 2016), pp. 3-5.
• S. Landau, Transactional information is remarkably revelatory, Proceedings of the National Academy of Sciences, Vol. 113, No. 20 (May 17, 2016), pp. 5467-5469.
• S. Landau, Choices: Privacy & Surveillance in a Once & Future Internet, Daedulus, Vol. 145, No. 1 (Winter 2016), pp. 54-64.
• S. Landau, Control Use of Data to Protect Privacy, Science, Vol. 347, Issue 6221, January 30, 2015.
• S. Landau, Educating Engineers: Teaching Privacy in a World of Open Doors (pre-publication version), IEEE Security and Privacy, Vol. 12, No. 3, May/June 2014, pp. 66-70.
• S. Landau, Politics, Love, and Death in a World of No Privacy, IEEE Security and Privacy, Vol. 11, No. 3, May/June 2013, pp. 11-13.
• A. Cavoukian, A. Davidson, M. Hansen, S. Landau, and A. Slomovic, Privacy: Front and Center, IEEE Security and Privacy, Vol. 10, No. 5, September/October 2012, pp. 5-10.
• S. Landau and T. Moore, Economic Tussles in Federated Identity Management, First Monday, Vol. 17, No. 10 (October 2012). An earlier version appeared at Workshop on Economics of Information Security, 2011.
• W. Diffie and S. Landau, Communications Surveillance: Privacy and Security at Risk, Communications of the ACM, Vol. 52, Issue 11, November 2009, pp. 42-47, and Queue, September 2009.
• S. Landau, H. Le Van Gong, and R. Wilton, Achieving Privacy in a Federated Identity Management System, Financial Cryptography and Data Security '09.
• S. Landau, The NRC Takes on Data Mining, Behavioral Surveillance, and Privacy, IEEE Security and Privacy, Vol. 7, No. 1, January/February 2009, pp. 58-62.
• S. Landau, Privacy and Security: A Multidimensional Problem, Viewpoints Column, Communications of the ACM, Vol. 51, Issue 11, November 2008, pp. 25-26.
• W. Diffie and S. Landau, Privacy on the Line: The Politics of Wiretapping and Encryption, MIT Press, 1998 (rev. ed. 2007).

Cybersecurity

• Harold Abelson, Ross Anderson, Steven M. Bellovin, Josh Benaloh, Matt Blaze, Jon Callas, Whitfield Diffie, Susan Landau, Peter G. Neumann, Ronald L. Rivest, Jeffrey I. Schiller, Bruce Schneier, Vanessa Teague, and Carmela Troncoso, Bugs in our Pocket: The Risks of Client-Side Scanning, Journal of Cybersecurity, Vol. 10, Issue 1, 2024.
• Nadiya Kostyuk and Susan Landau, Dueling over Dual_EC_DRBG: The Consequences of Corrupting a Cryptographic Standardization Process, Harvard National Security Journal, Volume 13, Issue 2 (2022).
• Committee on Law Enforcement and Intelligence Access to Plaintext Information in an Era of Widespread Strong Encryption: Options and Trade Offs, Computer Science and Telecommunications Board, National Academies of Sciences, Engineering, and Medicine, Decrypting the Encryption Debate: A Framework for Decisionmakers, 2018.
• S. Landau, Listening In: Cybersecurity in an Insecure Age, Yale University Press, 2017. Some podcasts: an in-depth Hoover Book Soiree discussion with Ben Wittes and a short Science blog interview with Jen Golbeck.
• S. Landau, Russia's Hybrid Warriors Got the White House, Now They're Coming for America's Town Halls, Foreign Policy, September 26, 2017.
• S. Bellovin, S. Landau, and H. Lin, Limiting the Undesired Impact of Cyber Weapons: Technical Requirements and Policy Implications, Journal of Cybersecurity, Vol. 3, Issue 1 (2017), pp. 59-68. Reprinted in Herbert Lin and Amy Zegart, eds., Bytes, Bombs, and Spies: The Strategic Dimensions of Offensive Cyber Operations, Brookings Institution Press, 2018.
• R. Wyden, M. Blaze, and S. Landau, The Government Will Soon Be Able to Legally Hack Anyone, Wired, September 14, 2016.
• S. Landau, The Real Security Risks of the iPhone Case, Science, Vol. 352, Issue 6292, June 17, 2016, pp. 1398-1399.
• S. Bellovin, M. Blaze, and S. Landau, Insecure Surveillance: Technical Issues with Remote Computer Searches, Computer, Vol. 49, No. 3 (March 2016), pp. 14-24; reprinted in Computing Now, June 2016.
• S. Landau, Testimony, Hearing on "The Encryption Tightrope: Balancing Americans' Security and Privacy", Judiciary Committee, United States House of Representatives, March 1, 2016.
• S. Landau, Perspective: Cybersurveillance and the New Frontier of Deterrence, Current History, Vol. 115, Issue 117 (January 2016), pp. 29-31.
• H. Abelson, R. Anderson, S. Bellovin, J. Benaloh, M. Blaze, W. Diffie, J. Gilmore, M. Green, S. Landau, P. Neumann, R. Rivest, J. Schiller, B. Schneier, M. Specter, and D. Weitzner, Keys under Doormats: Mandating insecurity by requiring government access to all data and communications, Journal of Cybersecurity, Vol. 1, 2015; a short version of "Keys under Doormats," appeared in Communications of the ACM, Vol. 58, No. 10, pp. 24-26.
• Committee on Responding to Section 5(d) of Presidential Policy Directive 28: The Feasibility of Software to Provide Alternatives to Bulk Signals Intelligence Collections, National Research Council, Bulk Collection of Signals Intelligence: Technical Options, National Academies Press, 2015.
• S. Bellovin, M. Blaze, and S. Landau, Comments on Proposed Search Rules, Preliminary Draft of Proposed Amendments to the Federal Rules of Appellate, Bankruptcy, Civil, and Criminal Procedure, October 31, 2014.
• S. Landau, Under the Radar: NSA's Efforts to Secure Private-Sector Telecommunications Infrastructure, Journal of National Security Law and Policy, Vol. 7, No.3 (2014), pp. 411-442; one section,
  ,
  was reprinted in Intelligence, translation by Junichi Hiramatsu, Vol. 15, March, 2015.
• S. Landau, Making Sense of Snowden Part II: What's Significant in the NSA Surveillance Revelations , IEEE Security and Privacy, Vol. 12, No. 1, January/February 2014; a short version, Highlights from Making Sense of Snowden Part II: What's Significant in the NSA Surveillance Revelations, (behind payment wall) appeared in IEEE Security and Privacy, Vol. 12, No. 1, January/February 2014, pp. 62-64.
• S. Bellovin, M. Blaze, S. Clark, S. Landau, Lawful Hacking: Using Existing Vulnerabilities for Wiretapping on the Internet, Northwestern Journal of Technology and Intellectual Property, Vol. 12, Issue 1 (2014).
• S. Landau, Making Sense of Snowden: What's Significant in the NSA Surveillance Revelations , IEEE Security and Privacy, Vol. 11, No. 4, July/August 2013, pp. 54-63.
• B. Adida, C. Anderson, A. Anton, R. Dingledine, E. Felten, M. Green, J. A. Halderman, D. Jefferson, C. Jennings, N. Mitter, P. Neumann, E. Rescorla, F. Schneider, B. Schneier, H. Shacham, M. Sherr, D. Wagner, and P. Zimmermann, CALEA II: Risks of Wiretap Modifications to Endpoints (whitepaper), May 2013.
• S. Bellovin, M. Blaze, S. Clark, and S. Landau, Going Bright: Wiretapping without Weakening Communications Infrastructure, IEEE Security and Privacy, Vol. 11, No. 1, January/February 2013, pp. 62-72. [Cited in New York Times editorial, May 20, 2013.]
• M. Blaze and S. Landau, The FBI Needs Hackers, Not Backdoors, Wired, January 14, 2013.
• S. Landau, The Large Immortal Machine and The Ticking Time Bomb, Journal of Telecommunications and High Technology Law, Volume 11, Issue 1 (2013), pp. 1-43.
• C. Landwehr, D. Boneh, J. Mitchell, S. Bellovin, S. Landau, and M. Lesk, Privacy and Cybersecurity: The Next 100 Years, Proceedings of the IEEE, Vol. 100, Issue: Special Centennial Issue (2012), 1659-1673.
• S. Bellovin, S. Bradner, W. Diffie, S. Landau, and J. Rexford, Can It Really Work?—Problems with Extending EINSTEIN to Critical Infrastructure, Harvard National Security Journal, Vol. 3 Issue 1 (2012). A short version of this paper appeared as As simple as possible—but not more so, S. Bellovin, S. O. Bradner, W. Diffie, S. Landau, J. Rexford, Communications of the ACM, Vol. 54, No. 8 (2011).
• S. Landau, Testimony, Hearing on Going Dark: Lawful Electronic Surveillance in the Face of New Technologies, Subcommittee on Crime, Terrorism, and Homeland Security, Judiciary Committee, United States House of Representatives, February 17, 2011.
• S. Landau, Surveillance or Security? The Risks Posed by New Wiretapping Technologies, MIT Press, 2011.
• D. D. Clark and S. Landau, Untangling Attribution, Harvard National Security Journal, Vol. 2, Issue 2 (2011); an earlier version appeared in Proceedings of a Workshop on Deterring Cyberattacks: Informing Strategies and Developing Options for U.S. Policy, National Academies Press, 2010, pp. 25-40.
• D. D. Clark and S. Landau, The Problem Isn't Attribution: It's Multi-Stage Attacks, Third International Workshop on Re-Architecting the Internet, 2010.
• S. Landau, Testimony Cybersecurity Activities at NIST's Information Technology Laboratory, Hearing before the Subcommittee on Technology and Innovation, Committee on Science and Technology, United States House of Representatives, October 22, 2009.
• W. Diffie and S. Landau, Communications Surveillance: Privacy and Security at Risk, Communications of the ACM, Vol. 52, Issue 11, November 2009, pp. 42-47, and Queue, September 2009.
• S. Landau, Privacy and Security: A Multidimensional Problem, Viewpoints Column, Communications of the ACM, Vol. 51, Issue 11, November 2008, pp. 25-26.
• W. Diffie and S. Landau, Brave New World of Wiretapping, Scientific American, September 2008, pp. 33-39.
• S. Landau, Security and Privacy Landscape in Emerging Technologies, IEEE Security and Privacy, Vol. 6, No. 4, August/September 2008, pp. 74-77.
• S. Bellovin, M. Blaze, W. Diffie, S. Landau, P. Neumann, and J. Rexford, Risking Communications Security: Potential Hazards of the `Protect America Act,' IEEE Security and Privacy, Vol. 6, No. 1, January/February 2008, pp. 24-33. A short version appeared as Internal Risks, External Surveillance Inside Risks 209, CACM 50, p. 128, Dec, 2007.
• S. Landau, A Gateway for Hackers: The Security Threat in the New Wiretapping Law, Washington Post, August 9, 2007, p. A17.
• S. Bellovin, M. Blaze, E. Brickell, C. Brooks, V. Cerf, W. Diffie, S. Landau, J. Peterson, J. Treichler, Security Implications of Applying the Communications Assistance for Law Enforcement Act to Voice over IP, 2006.
• S. Landau, National Security on the Line, Journal of Telecommunications and High Technology Law, Vol. 4, Issue 2 (2006), pp. 409-447.
• S. Landau, Security, Wiretapping, and the Internet, IEEE Security and Privacy, Vol. 3, No. 6, pp. 26-33, November/December 2005.
• S. Bellovin, M. Blaze, and S. Landau, The Real National-Security Needs for VoIP, Inside Risks 180, CACM 48, Nov. 2005, p. 120.
• S. Landau and M. Stytz, "Overview of Cyber Security: A Crisis of Prioritization," IEEE Security and Privacy, Vol. 3, No. 3, pp. 9-11 and sidebar, S. Landau, C. Landwehr, and F. Schneider, "The PITAC Report: A Brief Analysis," p. 10.
• S. Landau, What Lessons Are We Teaching, Inside Risks 180, CACM 48, June, 2005, p. 144.
• S. Landau, Security, Liberty, and Electronic Communications, (invited talk), in Matt Franklin (ed.), Advances in Cryptology: CRYPTO 2004, Springer Verlag, pp. 355-372.
• S. Landau, "The Transformation of Global Surveillance," in Bytes, Bombs, and Bandwidth: Information Technology and Global Security, Social Science Research Council, 2003, pp. 117-131.
• W. Diffie and S. Landau, "Cybersecurity Should be Kept in Civilian Hands," Boston Globe, August 19, 2002, pp. E-4. Appeared in slightly different form as "Ensuring Cybersecurity" in NGO Reporter, Vol. 10, No. 2, Sept. 2002.
• W. Diffie and S. Landau, "The Threat of .NET," New Technology Week, Nov. 5, 2001.
• S. Landau, Cryptography in Crisis, Commentary (In My Opinion), Notices of the American Mathematical Society, April 1998, p. 461.
• S. Landau, "Dangerous Increase of FBI Surveillance," Op-Ed, Chicago Tribune, March 6, 1998, p. 23.
• W. Diffie and S. Landau, Privacy on the Line: The Politics of Wiretapping and Encryption, MIT Press, 1998; updated and expanded edition, 2007.
• S. Landau and W. Diffie, Cryptography Control: FBI Wants It, but Why? Op-Ed, Christian Science Monitor, Oct. 6, 1997, p. 19.
• S. Landau, Eavesdropping and Encryption: U.S. Policy in an International Perspective, Conference on the Impact of the Internet on Communications Policy (1997), John F. Kennedy School of Government, Harvard University.
• S. Landau, S. Kent, C. Brooks, S. Charney, D. Denning, W. Diffie, A. Lauck, D. Miller, P. Neumann and D. Sobel, Codes, Keys and Conflicts: Issues in U.S. Crypto Policy, ACM Press, 1994. This report, funded by the NSF, was an undertaking of the USACM Committee on Public Policy. Dr. Stephen Kent, Chief Scientist - Security Technology, Bolt, Beranek and Newman, chaired the panel, which consisted of senior members of the cryptography and security communities, including members of the government, industry, and academia. A summary of the report appeared under the title Crypto Policy Perspectives, in Communications of the ACM, Vol. 37 (Aug. 1994), pp. 115-121.
• S. Landau, Zero Knowledge and the Department of Defense, Notices of the American Mathematical Society [Special Article Series], Vol. 35, No. 1 (1988), pp. 5-12.
• S. Landau, Primes, Codes and the National Security Agency, Notices of the American Mathematical Society, [Special Article Series], Vol. 30, No. 1 (1983), pp. 7-10.

Law and Public Policy

• S. Landau, J. Dempsey, E. Kamar, and S. Bellovin, Challenging the Machine: Contestability in Governemnt AI Systems, 2024.
• S. Landau, J. Dempsey, E. Kamar, and S. Bellovin, Recommendations for Government Development and Use of Advanced Automated Systems to Make Decisions about Individuals, 2024.
• S. Landau and P. Vargas Leon, Reversing Privacy Risks: Strict Limitations on the Use of Communications Metadata and Telemetry Information, Colorado Technology Law Journal, Vol. 20, Issue 2 (2023), pp. 225-336.
• Steven M. Bellovin, Matt Blaze, Susan Landau, and Brian Owsley, Seeking the Source: Criminal Defendants' Constitutional Right to Source Code, Ohio State Technology Law Journal, Volume 17, No. 1 (Winter 2021).
• S. Landau and A. Lubin, Examining the Anomalies, Explaining the Value: Should the USA FREEDOM Act's Metadata Program be Extended?, Harvard National Security Journal, Vol. 11, Issue 3 (2020), pp. 308-358.
• S. Landau, If It Isn't Efficacious, Don't Do It, European Data Protection Law Review, Vol. 5, Issue 4 (2019), pp. 466-470.
• S. Bellovin, M. Blaze, S. Landau, and S. Pell, It's Too Complicated: How the Internet Upends Katz, Smith, and Electronic Surveillance Law, Harvard Journal of Law and Technology, Vol. 30, No. 1 (2017), p. 1-101.
• S. Bellovin, M. Blaze, and S. Landau, Insecure Surveillance: Technical Issues with Remote Computer Searches, Computer, Vol. 49, No. 3 (March 2016), pp. 14-24; reprinted in Computing Now, June 2016.
• S. Bellovin, M. Blaze, and S. Landau, Comments on Proposed Search Rules, Preliminary Draft of Proposed Amendments to the Federal Rules of Appellate, Bankruptcy, Civil, and Criminal Procedure, October 31, 2014.
• S. Bellovin, M. Blaze, S. Clark, S. Landau, Lawful Hacking: Using Existing Vulnerabilities for Wiretapping on the Internet, Northwestern Journal of Technology and Intellectual Property, Vol. 12, Issue 1 (2014).
• S. Landau, Under the Radar: NSA's Efforts to Secure Private-Sector Telecommunications Infrastructure, Journal of National Security Law and Policy, Vol. 7, No.3 (2014), pp. 411-442; one section,
  ,
  was reprinted in Intelligence, translation by Junichi Hiramatsu, Vol. 15, March, 2015.
• S. Landau, The Large Immortal Machine and The Ticking Time Bomb, Journal of Telecommunications and High Technology Law, Volume 11, Issue 1 (2013), pp. 1-43.
• C. Landwehr, D. Boneh, J. Mitchell, S. Bellovin, S. Landau, and M. Lesk, Privacy and Cybersecurity: The Next 100 Years, Proceedings of the IEEE, Vol. 100, Issue: Special Centennial Issue (2012), 1659-1673.
• S. Bellovin, S. Bradner, W. Diffie, S. Landau, and J. Rexford, Can It Really Work?—Problems with Extending EINSTEIN to Critical Infrastructure, Harvard National Security Journal, Vol. 3 Issue 1 (2012). A short version of this paper appeared as As simple as possible—but not more so, S. Bellovin, S. O. Bradner, W. Diffie, S. Landau, J. Rexford, Communications of the ACM, Vol. 54, No. 8 (2011).
• D. D. Clark and S. Landau, Untangling Attribution, Harvard National Security Journal, Vol. 2, Issue 2 (2011); an earlier version appeared in Proceedings of a Workshop on Deterring Cyberattacks: Informing Strategies and Developing Options for U.S. Policy, National Academies Press, 2010, pp. 25-40.
• S. Landau, Testimony, Hearing on Going Dark: Lawful Electronic Surveillance in the Face of New Technologies, Subcommittee on Crime, Terrorism, and Homeland Security, Judiciary Committee, United States House of Representatives, February 17, 2011.
• S. Landau, Surveillance or Security? The Risks Posed by New Wiretapping Technologies, MIT Press, 2011.
• S. Bellovin, M. Blaze, W. Diffie, S. Landau, P. Neumann, and J. Rexford, Risking Communications Security: Potential Hazards of the `Protect America Act,' IEEE Security and Privacy, Vol. 6, No. 1, January/February 2008, pp. 24-33. A short version appeared as Internal Risks, External Surveillance Inside Risks 209, CACM 50, p. 128, Dec, 2007.
• S. Landau, A Gateway for Hackers: The Security Threat in the New Wiretapping Law, Washington Post, August 9, 2007, p. A17.
• S. Bellovin, M. Blaze, E. Brickell, C. Brooks, V. Cerf, W. Diffie, S. Landau, J. Peterson, J. Treichler, Security Implications of Applying the Communications Assistance for Law Enforcement Act to Voice over IP, 2006.
• S. Landau, National Security on the Line, Journal of Telecommunications and High Technology Law, Vol. 4, Issue 2 (2006), pp. 409-447.
• S. Landau, Security, Wiretapping, and the Internet, IEEE Security and Privacy, Vol. 3, No. 6, pp. 26-33, November/December 2005.

Identity Management

• S. Landau and T. Moore, Economic Tussles in Federated Identity Management, First Monday, Vol. 17, No. 10 (October 2012). Earlier version appeared at Workshop on Economics of Information Security, 2011.
• S. Landau, H. Le Van Gong, and R. Wilton, Achieving Privacy in a Federated Identity Management System, Financial Cryptography and Data Security '09.
• S. Landau and D. Mulligan, I'm Pc01002/SpringPeeper/ED288l.6; Who are You?, IEEE Security and Privacy, Vol. 6, No. 2, March/April 2008, pp. 13-15.
• S. Landau, Liberty ID-WSF Security and Privacy Overview, October 2003.
• S. Landau and J. Hodges, A Brief Introduction to Liberty, February 13, 2003.
• G. Ellison, J. Hodges, and S. Landau, Risks Presented by Single Sign-On Architectures, October 18, 2002.
• G. Ellison, J. Hodges, and S. Landau, Security and Privacy Concerns of Internet Single Sign-On, September 6, 2002.

Digital Rights Management

• S. Landau, R. Stratulate, and D. Twilleager, Consumers, Fans, and Control: What the Games Industry Has to Teach Hollywood about DRM, CCS Workshops: DRM '06.
• G. Papadopoulos and S. Landau, "Innovate, Create—and Compensate!," 19 July 2005.

Symbolic Computation

• S. Landau, "Computations with Algebraic Numbers," in J. Grabmeier, E. Kaltofen, and V. Weispfennig (eds.), Computer Algebra Handbook, Spring Verlag, 2003, pp. 18-19.
• S. Landau and N. Immerman, Embedding Linkages in Integer Lattices, Algorithmica, Vol. 43, No. 5, May 2000, pp. 115-120. A preliminary version appeared in MSI Workshop on Computational Geometry, October, 1994.
• S. Landau, Compute and Conjecture, Commentary (In My Opinion), Notices of the American Mathematical Society, Feb. 1999, p. 189.
• S. Landau, : Four Different Views, Mathematical Intelligencer, Vol. 20, No. 4 (Fall 1998), pp. 55-60.
• D. Kozen, S. Landau, and R. Zippel, Decomposition of Algebraic Functions, Journal of Symbolic Computation, Vol. 22 (1996), pp. 235-246. A preliminary version appeared in Algorithmic Number Theory Symposium (1994).
• S. Landau, How to Tangle with a Nested Radical, Mathematical Intelligencer, Vol. 16, No. 2 (Spring 1994), pp. 49-55.
• S. Landau, Finding Maximal Subfields, SIGSAM Bulletin, Vol. 27, No. 3 (1993), pp. 4-8.
• S. Landau, Simplification of Nested Radicals, SIAM J. of Comput., Vol. 21 (1992), pp. 85-110. A preliminary version appeared in Thirtieth Annual IEEE Symposium on Foundations of Computer Science (1989), pp. 314-319.
• S. Landau, A Note on `Zippel Denesting,' J. Symb. Comput., Vol. 13 (1992), pp. 41-47.
• J. Cremona and S. Landau, Shrinking Lattice Polyhedra, SIAM J. of Discrete Math, Vol. 3, No. 3 (1990), pp. 338-348. A preliminary version appeared in Proceedings of the First ACM-SIAM Symposium on Discrete Algorithms (1990), pp. 188-193.
• D. Kozen and S. Landau, Polynomial Decomposition Algorithms, J. Symb. Comput., Vol. 7 (1989), pp. 445-456. Appeared in a different version as J. von zur Gathen, D. Kozen and S. Landau, "Functional Decomposition of Polynomials" Twenty-Eight Annual IEEE Symposium on the Foundations of Computer Science (1989), pp. 314-319.
• S. Landau, Factoring Polynomials Quickly, Notices of the American Mathematical Society, [Special Article Series], vol. 34, No. 1 (1987), pp. 3-8.
• S. Landau and G. Miller, Solvability by Radicals is in Polynomial Time, J. Comput. Sys. Sci., Vol. 30, No. 2 (1985), pp. 179-208. A preliminary version appeared in Fifteenth ACM Symposium on Theory of Computing (1983), pp. 140-151.
• S. Landau, Factoring Polynomials over Algebraic Number Fields, SIAM J. of Comput., Vol. 14, No. 1 (1985), pp. 184-195.
• S. Landau, Polynomial Time Algorithms for Galois Groups, Proceedings of the Int'l. Symposium on Symbolic and Algebraic Computation (1984), Spring Verlag Lecture Notes in Computer Science, No. 174, pp. 225-236.

Complexity

• N. Immerman and S. Landau, The Complexity of Iterated Multiplication, Information and Computation Vol. 116, No. 1 (1995), pp. 103-116. A preliminary version appeared in Fourth Annual Structure in Complexity Conference (1989), pp. 104-111.
• S. Landau and N. Immerman, The Similarities (and Differences) between Polynomials and Integers, Int'l. Conf. on Number Theoretic and Algebraic Methods in Computer Science (1993), pp. 57-59.

Women in Science

• S. Landau, ``What AWM Has Meant to Me,'' Janet L. Beery, Sarah J. Greenwald, and Cathy Kessel, eds., Fifty Years of Women in Mathematics: Reminiscences, History, and Visions for the Future of AWM, Spring Verlag, 2022, pp. 301-306.
• T. Benzel, S. Landau, and H. Orman, Expanding the Pipeline: G/rep{sec}= underrepresented groups in security research, Computing Research News, March 2015, pp. 8-10.
• S. Landau, Anywhere, Anytime—Or Just Where is Your Office Anyhow? Pipeline series, Computing Research News, September 2005, p. 2.
• S. Landau, A Far Cry from Galois Fields, Newsletter of the Association for Women in Mathematics, November-December 2003, pp. 10-13.
• S. Landau, Time to Move Mountains, Commentary (In My Opinion), Notices of the American Mathematical Society, Sept. 2000, p. 853.
• S. Landau, What Happens to the Women? Association for Women in Mathematics Newsletter, March-April 1995, pp. 6-7.
• S. Landau, Universities and the Two-Body Problem, Computing Research News, March, 1994, p. 4. Also reprinted in the Association for Women in Mathematics Newsletter, March 1994, pp. 12-14, and SIGACT News, Dec. 1994, pp. 41-43 and reprinted in Complexities: Women in Mathematics, Bettye Anne Case and Anne Leggett (eds.), Princeton University Press, 2005, pp. 253-256.
• S. Landau, Tenure Track, Mommy Track, Association for Women in Mathematics Newsletter, May-June 1991. Also reprinted in shortened form in Notices of the American Mathematical Society, Sept. 1991, pp. 703-4 and reprinted in Complexities: Women in Mathematics, Bettye Anne Case and Anne Leggett (eds.), Princeton University Press, 2005, pp. 260-263.

Blog Posts, Letters to the Editor, and Other Short Pieces on a Variety of Topics

• S. Landau, ``The Loss of a Force of Nature: Memories of Ross Anderson,'' in Frank Stanjano, ed., Rossfest Festschrift: in memory of Ross Anderson, 2025, pp. 97-101.
• S. Landau, The Dangers Lurking in the U.K.'s Plan for Electronic Eavesdropping, Lawfare, February 25, 2025.
• S. Landau, End-to-End Encryption is a Critical National Security Tool, Lawfare, November 21, 2024.
• S. Landau, CALEA Was a National Security Disaster Waiting to Happen, Lawfare, November 13, 2024.
• S. Landau and J. Dempsey, Challenging the Machine: Insights from a Workshop on Contestability of Advanced Automated Systems, Lawfare, June 21, 2024
• J. Dempsey and S. Landau, Challenging the Machine: Contestability in Government AI Systems, Lawfare, March 11, 2024.
• S. Landau, Write the Laws for the World We Live In—Not the One We Imagine, Lawfare, December 20, 2023.
• S. Landau, The Shapeshifting Crypto Wars, Lawfare, October 12, 2023; reprinted at M3AAWG blog, April 30, 2024.
• S. Landau, A Radical Proposal for Protecting Privacy: Halt Industry's Use of 'Non-Content', Lawfare, September 8, 2023.
• S. Landau, The EU's Dangerous Proposal for Stopping Online Child Sexual Abuse Material, Progressive Post, July 5, 2023.
• S. Landau, Finally Some Clear Thinking on Child Sexual Abuse and Exploitation Investigation and Intervention, Lawfare, January 24, 2023.
• S. Landau, Cyberwar in Ukraine: What You See Is Not What's Really There, Lawfare, September 30, 2022.
• S. Landau, FTC lawsuit spotlights a major privacy risk: From call records to sensors, your phone reveals more about you than you think, The Conversation, August 30, 2022.
• S. Landau, The EU's Proposal on CSAM is a Dangerous Misfire, Lawfare, June 23, 2022.
• S. Landau, Impending demise of Roe v. Wade puts a spotlight on a major privacy risk: Your phone reveals more about you than you think, The Conversation, May 23, 2022.
• S. Landau, How the U.K. and the Senate Judiciary Committee Are Being Dangerously Foolish About Cryptography, Lawfare, March 1, 2022.
• S. Landau, Decoding When IT is Useful During Wartime—and What Causes IT to Fail, review of Information Technology and Military Power, Texas National Security Review, February 1, 2022.
• S. Landau, The Conflict over Cryptography, Horizons, Winter 2022.
• S. Landau, Bugs in our Pockets: The Security Risks of Client-Risk Scanning, Lawfare, October 15, 2021.
• S. Landau, Normalizing Surveillance, Lawfare, August 30, 2021.
• S. Landau, Dangers Posed by Evidentiary Software--and What to Do about It, Lawfare, June 23, 2021.
• S. Landau, Lessons from Contact-Tracing and Exposure-Notification Apps, Lawfare, May 26, 2021.
• S. Landau, Contact-tracing apps have serious physical, biological limitations, Big Think, May 24, 2021, reprinted from People Count: Contact-Tracing Apps and Public Health, MIT Press, 2021.
• S. Landau, Contact-Tracing Apps: What's Needed to Be an Effective Public Health Tool, Lawfare, January 19, 2021.
• S. Landau, Law Enforcement is Accessing Locked Devices Quite Well, Thank You, Lawfare, December 7, 2020.
• S. Landau, It's Never Too Late to Think about NSA's CDR Collection Program, Lawfare, June 22, 2020.
• S. Landau, C. Lopez, and L. Moy, The Importance of Equity in Contact Tracing, Lawfare, May 1, 2020.
• S. Landau, Looking Beyond Contact Tracing to Stop the Spread, Lawfare, April 10, 2020.
• S. Landau, Location Surveillance to Counter COVID-19: Efficacy is What Matters, Lawfare, March 25, 2020.
• S. Landau, If We Build It (They Will Break In), Lawfare, February 28, 2020.
• D. McDonough and S. Landau, Breaking the Encryption Impasse, The Hill, January 16, 2020.
• S. Landau, A Thoughtful Response to Going Dark and the Child Pornography Issue, Lawfare, November 5, 2019.
• S. Landau, A Security Failure in the White House, Lawfare, November 1, 2019.
• S. Landau, The NSA General Counsel's Proposal for a Moonshot, Lawfare, September 23, 2019.
• J. Baker and S. Landau, New Perspectives on the Future of Encryption, Lawfare, May 28, 2019.
• S. Landau, Is Section 215 No Longer Worth the Effort?, Lawfare, March 11, 2019.
• S. Landau, Cryptography Policy Laundering, Center for International Law and Governance, The Fletcher School, January 15, 2019.
• S. Landau, Exceptional Access: The Devil is in the Details, Lawfare, December 26, 2018.
• S. Bellovin and S. Landau, Encryption by Default Equals National Security, Lawfare, October 26, 2018.
• S. Landau, The Five Eyes Statement on Encryption: Things are Seldom What They Seem, Lawfare, September 26, 2018.
• S. Landau, Why the Russians Might Hack the Boy Scouts, The Conversation, September 13, 2018.
• S. Landau, Brett Kavanaugh's Failure to Acknowledge the Changes in Communications Technology, Lawfare, August 3, 2018.
• S. Landau, What's Involved in Vetting a Security Proposal: Why Ray Ozzie's Proposal for Exceptional Access Does Not Pass Muster, Lawfare, May 14, 2018.
• S. Bellovin, M. Blaze, D. Boneh, S. Landau, R. Rivest, Analysis of the CLEAR Proposal per the National Academies' Framework, Columbia Univeristy Tech Report, CU-003-18, May 10, 2018.
• S. Bellovin, M. Blaze, D. Boneh, S. Landau, R. Rivest, Ray Ozzie's crypto proposal: a dose of technical reality (op-ed), Ars Technica, May 6, 2018.
• S. Landau, Building on Sand isn't Stable: Correcting a Misunderstanding of the National Academies Report on Encryption, Lawfare, April 25, 2018.
• S. Landau, The Russians Are Coming, Lawfare, April 18, 2018.
• S. Landau, Revelations on the FBI's Unlocking of the San Bernardino Phone: Maybe the Future Isn't Going Dark After All, Lawfare, March 30, 2018.
• S. Landau, What Went Wrong? Facebook and "Sharing Data" with Cambridge Analytica, Blog@ACM, March 28, 2018.
• S. Landau, No Facebook, It's Not About Security; It's About Privacy, Lawfare, March 26, 2018.
• S. Landau, Encrypted Smartphones Secure Your Identity, Not Just Your Data, The Conversation, February 28, 2018; reprinted in The Conversation—Indonesia, March 15, 2018.
• S. Landau, Understanding Data Breaches as National Security Threats, Lawfare, February 26, 2018.
• S. Landau, What Law Enforcement Really Needs for Investigations in the Digital Age, Lawfare, February 12, 2018.
• S. Landau, Cybersecurity: Time for a New Definition, Lawfare, January 12, 2018.
• S. Landau, Using Threat Modeling to Secure America, Lawfare, December 20, 2017.
• S. Landau, Real Security Requires Encryption—Even if Investigators Get Blocked, The Conversation, November 1, 2017.
• S. Landau, Punching the Wrong Bag: The Deputy AG Enters the Crypto Wars, Lawfare, October 27, 2017.
• S. Landau, Phones Move—and So Should the Law, Lawfare, August 16, 2017.
• S. Landau, An Important Russian Hacking Story, Lawfare, June 2, 2017.
• S. Landau, A Step Forward for Security, Lawfare, May 17, 2017.
• S. Landau, The FBI and I Agree, Lawfare, March 14, 2017.
• S. Landau and C. O'Neil, Why Ghosts in the Machine Should Remain Ghosts, Lawfare, December 7, 2016.
• S. Landau, The FBI Should be Enhancing US Cybersecurity, Not Undermining It, Lawfare, December 1, 2016.
• S. Landau, Protecting the Republic: Securing Communications is More Important than Ever, Lawfare, November 21, 2016.
• S. Landau, Securing Phones and Securing Us (revisited), Lawfare, September 15, 2016.
• S. Landau, Setting Up a Straw Man: ODNI's Letter in Response to Don't Panic, Lawfare, May 12, 2016.
• S. Landau, Million Dollar Vulnerabilities and an FBI for the Twenty-first Century, Lawfare, April 26, 2016.
• S. Landau, A Response to Susan's Post, Lawfare, March 25, 2016.
• S. Landau, The National-Security Needs for Ubiquitous Encryption, Lawfare, February 2, 2016 (also appeared in Don't Panic: Making Progress on the Going Dark Debate, Berkman Center for Internet & Society Berklett Cybersecurity Project (also translated into Portuguese by Instituto de Tecnologia e Sociedade do Rio), 2019.
• S. Landau, Be Careful What You Wish For: A Response, Lawfare, January 8, 2016.
• S. Landau, The Encryption Wars: Everything has Changed, and Nothing has Changed, Scientific American (blog post), November 18, 2015.
• S. Landau, Why the Support for Crypto, Lawfare, September 21, 2015.
• S. Landau, A Public Split: Listening to the Conversation at Aspen, Lawfare, July 28, 2015.
• S. Landau, Thoughts on Encryption and Going Dark: Counterpart, Lawfare, July 15, 2015.
• S. Landau, Keys under Doormats: Mandating Insecurity, Lawfare, July 7, 2015.
• S. Landau, Director Comey and the Real Threats, Lawfare, July 3, 2015.
• S. Landau, Why the Privacy Community Focuses Where it Does, Lawfare, June 16, 2015.
• S. Landau, What was Samsung Thinking?, Letter from the Editor, IEEE Security and Privacy, Vol. 13, No. 3, May/June 2015, pp. 3-4.
• S. Landau, Time to Resolve the Metadata Fight, Lawfare, May 29, 2015.
• S. Landau, What We Must Do about Cyber, Lawfare, March 10, 2015.
• S. Landau, Finally ... Some Clear Talk on the Encryption Issue, Lawfare, February 16, 2015.
• S. Landau, What David Cameron Doesn't Get, Lawfare, January 20, 2015.
• S. Landau, Summing Up, Communications of the ACM, Vol. 57, No. 11, November 2014, pp. 37-39.
• S. Landau, Securing Phones—and Securing US, Lawfare, September 29, 2014.
• S. Landau, Facing Ethical Choices, Letter from the Editor, IEEE Security and Privacy, Vol. 12, No. 4, July/August 2014, pp. 3-6.
• S. Landau, On NSA's Subversion of NIST's Algorithm, Lawfare, July 25, 2014.
• S. Landau, What The Court Didn't Say in Riley May be the Most Important Thing of All, Lawfare, June 30, 2014.
• S. Landau, What the President Said—and Didn't Say—About Surveillance, Huffington Post, August 11, 2013.
• S. Landau, Susan Landau on Minimization, lawfaremedia.org, June 18, 2013.
• S. Landau, Canaries in the Coal Mine, Huffington Post, June, 6, 2013.
• S. Landau, Susan Landau on USG Surveillance via New Technologies, lawfaremedia.org, April 30, 2013.
• S. Landau, Boston and the Right to Privacy, Huffington Post, April 22, 2013.
• S. Landau, Cybersecurity—Getting it Right This Time, Huffington Post, February 13, 2013.
• S. Landau, Searching in a Haystack ... Finds Straw, Huffington Post, October 15, 2012.
• S. Landau, Susan Landau on Cybersecurity Bills, Lawfare.com, May 3, 2012.
• S. Landau, Nothing to Fear but Fear Itself, Huffington Post, April 29, 2012.
• S. Landau, Timesharing Dexter, R.L. Constable and A. Silva (eds.), Logic and Program Semantics - Essays Dedicated to Dexter Kozen on the Occasion of His 60th Birthday, LNCS 7230, pp. 329-332, Springer, 2012.
• S. Landau, One Small Step for Privacy..., Huffington Post, January 26, 2012.
• S. Landau, It's All in How You View It, Huffington Post, January 17, 2012.
• S. Landau, Surveillance and security: Securing whom? And at what cost?, Privacy International, November 30, 2011.
• S. Landau, Hollywood and the Internet: Time for the Sequel, Huffington Post, November 28, 2011.
• S. Landau, Who Knows Where I Am? What Do They Do with the Information?, Huffington Post, October 3, 2011.
• S. Landau, Data Retention? News of the World Demos the Risks, Huffington Post, July 21, 2011.
• S. Landau, Mr. Murdoch and Mr. Brown: A Real-Life Example of Why Privacy Matters, Huffington Post July 18, 2011.
• S. Landau, Where Have All the Wiretap Reports Gone?, Huffington Post, July 14, 2011.
• S. Landau, Privacy, Online Identity Solutions, and Making Money: Pick Three?, Huffington Post, July 7, 2011.
• S. Landau, Getting Communications Security Right, Huffington Post, April 19, 2011.
• S. Landau, Getting Wiretapping Right, Huffington Post, April 5, 2011.
• S. Landau, NIST Leads the Charge on Online Authentication, Huffington Post, January 12, 2011.
• S. Landau, Who's Been Looking Over My Shoulder?—The FTC Seeks to Update Privacy Protections, Huffington Post, December 6, 2010.
• S. Landau, The FBI Wiretap Plan: Upsetting the Security Equation, Huffington Post, October 25, 2010.
• S. Landau, Moving Rapidly Backwards on Security, Huffington Post, October 13, 2010.
• S. Landau, The Pentagon's Message on Cybersecurity, Huffington Post, , August 31, 2010.
• S. Landau, Wrong Direction on Privacy, Huffington Post, August 2, 2010.
• S. Landau, Separating Wheat from Chaff, Huffington Post, July 23, 2010.
• S. Landau, Internet Time, Commentary (In My Opinion), Notices of the American Mathematical Society, March 2000, p. 325.
• S. Landau, The Myth of the Young Mathematician, Letter from the Editor, Notices of the American Mathematical Society, Nov. 1997, p. 1284.
• S. Landau, Mathematicians and Social Responsibility, Letter from the Editor, Notices of the American Mathematical Society, Feb. 1997, p. 188.
• S. Landau, Rising to the Challenge, Letter from the Editor, Notices of the American Mathematical Society, June, 1996, p. 652.
• S. Landau, "Joseph Rotblat: From Fission Research to a Prize for Peace," Scientific American, Jan. 1996, pp. 38-39.
• S. Landau, Joseph Rotblat: The Road Less Traveled, Bulletin of the Atomic Scientists, Jan.-Feb. 1996, pp. 46-54.
• S. Landau, Something There is That Doesn't Love a Wall, Letter from the Editor, Notices of the American Mathematical Society, Nov. 1995, p. 1268.
• S. Landau, Letter from the Editor, Notices of the American Mathematical Society, May 1995, p. 524.
• S. Landau, "The Secret of Life is a Nontrivial Computation," SIAM News, May 1991, pp. 12-13.
• S. Landau, "The Responsible Use of `Expert' Systems," Proceedings of the Symposium on Directions and Implications of Advanced Computing (1987), pp. 167-181. Also appeared in Directions and Implications of Advanced Computing, Vol. 1, Ablex Publishing Corp. (1989), pp. 191-202.
• S. Landau, What's Doing in Ithaca, New York, New York Times, Sept. 9, 1979, Section X, p. 7.
• Judith F. Gilsinn and Susan Landau, NBSIR 74-633, The NBS Computerized Carpool Matching System: Users' Guide, Applied Math Division, Institute for Basic Standards, Operations Research Section, National Bureau of Standards, December 1974.

Podcasts

• >What is Ransomware and What Can be Done about It?, The Briefing Room, BBC, May 22, 2025.
• Susan Landau and Alan Rozenshtein Debate End-to-End Encryption (Again!), The Lawfare Podcast, December 18, 2024.
• Cybersecurity for Public Value, Episode 6, May 3, 2023.
• Zero Trust? Encryption and Other Approaches to Protecting Private Data and Communications, Privacy in an Age of Zero Trust, American Bar Association (ABA) Civil Rights and Social Justice and ABA Science and Technology Law Section, June 9, 2023.
• Securing Our Homes, Project Sustainability, February 8, 2023.
• Home Security and Safety, Project Sustainability, February 1, 2023.
• Europe Doubles Down on Client Side Scanning, The Lawfare Podcast, August 2, 2022.
• Doctors are People Too, March 1, 2022.
• Susan Landau and Ross Anderson on the Going Dark Debate and the Risks of Client-Side Scanning, The Lawfare Podcast, November 10, 2021.
• Contact-Tracing Apps: How They Work and Privacy Concerns, The Breakfast Grille, BFM, Malaysia, September 8, 2021.
• Episode 1—Susan Landau: People Count, Over the Rainbow: 21st Century Security and Privacy, IEEE Computer Society, July 8, 2021.
• A Digital Contact Tracing Retrospective, The Lawfare Podcast, June 7, 2021.
• The Ransomware Threat, The Briefing Room, BBC, May 27, 2021.
• Is Contact Tracing a Privacy Threat?, The Lawfare Podcast, April 18, 2020.
• Moving the Encryption Policy Conversation Forward, The Lawfare Podcast, October 8, 2019.
• Conversations about Software Engineering: Security and Privacy with Susan Landau, April 19, 2018.
• Decoding the Cyber Era with Susan Landau, The Fletcher Forum of World Affairs, April 12, 2018.
• Tech Talk: Cybersecurity in an Insecure Age, Tech Talks with Brian Wesolowski, Center for Democracy and Technology, March 28, 2018.
• The Cyberlaw Podcast: Interview with Susan Landau, February 15, 2018.
• Books, et al., Q& A with Susan Landau, author of Listening In, November 24, 2017.
• Security by the Book: Susan Landau on Listening In,The Lawfare Podcast, November 7, 2017.
• Security Mom: The Podcast about Our Homeland, Decrypting Encryption, October 8, 2015.

Webinars

• Chair Chat: Encryption and Privacy, ABA Civil Rights and Social Justice Section, December 28, 2022.

Professional Activities (recent)

Advisory Boards

• member, Advisory Board, Electronic Privacy Information Center, 2024-present.
• member, Division Committee of the Division of Engineering and Physical Sciences, National Academies of Sciences, Engineering, and Medicine, 2020-present.
• member, Center for Democracy and Technology Advisory Council, 2018-2024.
• member, Forum on Cyber Resilience, National Academies of Sciences, Engineering, and Medicine, 2016-2022.
• member, Computer Science and Telecommunications Board, National Academies of Sciences, Engineering, and Medicine, 2010-2016.
• member, Advisory Board, National Cyber Security Hall of Fame, 2012-2015.
• advisory board member, Committee on Women in Science and Technology, Stevens Institute of Technology, 2011-2013.
• member, Advisory Committee, National Science Foundation Directorate for Computer and Information Science and Engineering, 2009-2012.
• member, Commission on Cyber Security for the 44th Presidency, Center for Strategic and International Studies, 2009-2011.
• member, Information Security and Privacy Advisory Board, National Institute for Standards and Technology, 2002-2008.

  Editorial Boards

• area editor, Political and Policy Perspectives, Journal of Cybersecurity, 2015-present.
• contributing editor, Lawfare, 2015-present.
• associate editor in chief, IEEE Security and Privacy, 2013 - 2016.
• editor, special issue on online social networks, IEEE Security and Privacy, May/June 2013.
• associate editor, IEEE Security and Privacy, 2005 - 2012.
• co-editor, special issue on identity management, IEEE Security and Privacy, March/April 2008.
• section board member, Viewpoints, Communications of the ACM, 2008-2014.
• associate editor, Notices of the American Mathematical Society, 1994 - 2001.

  Program Committees and Related Work

• co-organizer, Student Workshop in Advanced Automated Algorithms, Contestability, and the Law, Tufts University, 2024.
• co-organizer, Workshop in Advanced Automated Algorithms, Contestability, and the Law, Alexandrria, VA, 2024.
• co-organizer, Putting the Tech into Cybersecurity Policy: A Workshop for Social Science and Legal Scholars, Tufts University, 2023.
• program committee member, 7th IEEE European Symposium on Security and Privacy, 2022.
• member, Committee on International Security Studies, American Academy of Arts and Sciences, 2019-present.
• member, Steering Committee, Workshop on Economics in Information Security, 2019-present.
• member, Encryption Working Group, Carnegie Endowment for International Peace, 2018-2020.
• member, Law Enforcement and Intelligence Access to Plaintext Information in an Era of Widespread Strong Encryption: Options and Trade Offs, Computer Science and Telecommunications Board, National Academies of Sciences, Engineering, and Medicine, 2016-2017.
• program committee member, Privacy Enhancing Technologies Symposium (PETS) 2017, 2018, 2019, and editorial board member Proceedings of Privacy Enhancing Technologies Symposium (PoPETS), 2017, 2018, 2019.
• steering committee member, Workshop on Encryption and Mechanisms for Authorized Government Access to Plaintext, Computer Science and Telecommunications Board, National Academies of Sciences, Engineering, and Medicine, 2016.
• participant, Berkman Center for Internet & Society Berklett Cybersecurity Project, 2015-2018.
• member, ACM Policy Award Committee, 2015-2018.
• member, Committee on the Workshop on Data Breach Aftermath and Recovery for Individuals and Institutions (report), National Academies of Sciences, Engineering, and Medicine, 2015-2016.
• member, Intelligence Science and Technology Experts Group, National Academies of Sciences, Engineering, and Medicine, 2015-present.
• organizing committee member, Committee on a Workshop for Privacy for the Intelligence Commmunity: Emerging Technologies, Academic and Industry Research, and Best Practices, 2015; (see Privacy Research and Best Practices: Summary of a Workshop for the Intelligence Community, 2016).
• organizing committee member, Principles and Practices of Privacy Science Workshop, 2015.
• organizing committee member, CCC Privacy by Design Workshops, 2014-2015.
• program committee member, International Workshop on Privacy Engineering, 2015.
• member, Responding to Section 5(d) of Presidential Policy Directive 28: The Feasability of Software to Provide Alternatives to Bulk Signals Intelligence Collection, Computer Science and Telecommunications Board, National Academies of Science, Engineering, and Medicine, 2014-2015.
• steering committee member, Sackler Forum on Cybersecurity, National Academy of Sciences and Royal Society, 2014.
• member, Electorate Nominating Committee, Section on Information, Computing, and Communication, American Association for the Advancement of Science, 2014-present.
• steering commmittee member, Cybersecurity Ideas Lab, NSF, 2014.
• steering committee member, NSF Secure and Trustworthy Cyberspace PI Meeting, November 2012.
• program committee member, New Security Paradigms Workshop, 2012.
• committee member, Usability, Security, and Privacy of Computer Systems: a Workshop, National Academies of Science, Engineering, and Medicine, 2009.
• program committee member, ACM Cloud Computing Security Workshop, CCS, 2009.
• review committee, FIND Observer Panel Report, NSF Future Internet program, April 2009.
• program committee member, Computers, Freedom, and Privacy, 2007.
• program committee member, IEEE Symposium on Security and Privacy, 2006.
• program committee member, Industry and Government Track, 12th ACM Conference on Computer and Communications Privacy, 2005.
• program committee member, Workshop on Privacy in the Electronic Society, 2004.
• program committee member, Computers, Freedom, and Privacy, 2004.
• program committee member, CRA Grand Challenges in Information Security and Assurance, 2003.
• advisory board member, Computers, Freedom, and Privacy, 2003.
• member, ACM Advisory Committee on Security and Privacy, 2001 - 2003.
• member, ACM Committee on Law and Computing Technology, 1999 - 2003.
• program committee member, Computers, Freedom, and Privacy, 2000.
• distinguished lecturer, Sigma Xi, 1999 - 2001.
• member, Discipline Advisory Committee (Computer Science), Fulbright Scholars, 1995 - 1997; chair, 1997.
• member-at-large, Section Committee, Mathematics Section, American Association for the Advancement of Science, 1994 - 1998.
• co-chair, Security and Privacy session, Massachusetts Telecommunications Conference, 1994.
• program committee member, International Symposium on Symbolic and Algebraic Computation, 1993.
• member, NSF Graduate Fellowship in Computer Science Evaluation Panel, 1987-1989; chair, 1989.

  Service in Support of Women in Science

• member, External Advisory Board, Program in Cyber, Security, and Policy, Spelman College, 2024-present.
• member, Steering Committee, GREPSEC Workshops, 2020-present.
• co-chair, GREPSEC IV, May 2019.
• co-chair, GREPSEC III, May 2017.
• co-chair, GREPSEC II, May 2015.
• co-chair, GREPSEC, May 2013.
• member, PhD Forum Committee, Grace Hopper Celebration of Women in Computer Science, 2011.
• member, Women of Vision Awards Nomination Committee, Anita Borg Institute for Women and Technology, 2009.
• member, ACM-W Council Executive Committee, 2009-2012.
• co-chair, MIT Women in Math: A Celebration, April 12-13, 2008.
• member, Industry Advisory Committee, Grace Hopper Celebration of Women in Computer Science, 2007.
• member, Panels, Workshops, and Presentations Committee, Grace Hopper Celebration of Women in Computer Science, 2007.
• chair, selection committee, Athena Lecturer 2006-2011 (founding co-chair, 2005-2006).
• moderator, researcHers, mailing list for women computer science researchers, 2004-2016 (founder, 2004).
• founding moderator, The Booklist (a list of computer science books written by women computer scientists), 2004-2009.
• member, Committee on the Status of Women in Computing Research, 2003 - 2010.
• advisory board member, ACM Committee on Women, 2003 - 2009.
• member, Membership Committee, Association for Women in Mathematics, 1981-1983.

Honors and Awards

• Bertrand Russell Award, American Mathematical Society, 2024.
• Lifetime Achievement Award, USENIX, with Steven Bellovin and Matt Blaze, 2023.
• National Associate, National Academies of Sciences, Engineering, and Medicine, 2020.
• Inductee, Information System Security Association Hall of Fame, 2018.
• Fletcher Faculty Research Award, for Listening In: Cybersecurity in an Insecure Age, 2018.
• EFF Pioneer Award, for Keys Under Doormats: Mandating insecurity by requiring government access to all data and communications with Harold Abelson, Ross Anderson, Steven Bellovin, Josh Benaloh, Matt Blaze, Whitfield Diffie, John Gilmore, Matthew Green, Peter Neumann, Ronald Rivest, Jeffrey Schiller, Bruce Schneier, Michael Specter, and Daniel Weitzner, 2016.
• Inductee, Cybersecurity Hall of Fame, 2015.
• M3AAWG J.D. Falk Award, for "Keys Under Doormats: Mandating insecurity by requiring government access to all data and communications," with Harold Abelson, Ross Anderson, Steven Bellovin, Josh Benaloh, Matt Blaze, Whitfield Diffie, John Gilmore, Matthew Green, Peter Neumann, Ronald Rivest, Jeffrey Schiller, Bruce Schneier, Michael Specter, and Daniel Weitzner, 2015.
• Surveillance Studies Book Prize, for Surveillance or Security? The Risks Posed by New Wiretapping Technologies, 2012.
• The Guardian's Open 20: Fighters for Internet Freedom, 2012.
• Fellow, John S. Guggenheim Memorial Foundation, 2012.
• Fellow, Association for Computing Machinery, 2011.
• Women of Vision Social Impact Award, Anita Borg Institute for Women and Technology, 2008.
• Distinguished Engineer, Association for Computing Machinery, 2006.
• Fellow, American Association for the Advancement of Science, 2000.
• IEEE-USA Award for Distinguished Literary Contributions Furthering Public Understanding of the Profession, with Whitfield Diffie, for Privacy on the Line: The Politics of Wiretapping and Encryption, 1999.
• McGannon Book Award for Social and Ethical Relevance in Communication Policy Research, Donald McGannon Communication Research Center (Fordham University), with Whitfield Diffie, for Privacy on the Line: The Politics of Wiretapping and Encryption, 1998.
• NSF Mathematical Sciences Postdoctoral Fellowship, 1988.