Justin Sherman works on cybersecurity and data privacy, technology and internet policy, and geopolitical risk — plus the data brokerage and surveillance ecosystem.

Justin is the founder and CEO of Global Cyber Strategies, a Washington, DC-based research and advisory firm. They provide risk, research, advisory, training and simulation-building, and expert witness services on cybersecurity, data privacy, tech policy, supply chain, and geopolitics to nonprofits, startups, Fortune 1000 companies, law firms, investors, and the US government. He is also an adjunct professor and senior fellow at Duke University’s Sanford School of Public Policy, where he founded and leads its data brokerage research project and teaches on cybersecurity, data privacy, and technology policy; a distinguished fellow at Georgetown Law’s Center on Privacy & Technology; and a nonresident senior fellow at the Atlantic Council. He is also a contributing editor at Lawfare and a fellow at the Starling Lab for Data Integrity at Stanford University. He co-hosts the Power On, Power Off podcast with Jenna Ruddock about technology, people, and power.

He serves as an advisor to the Christchurch Call to Eliminate Terrorist and Violent Extremist Content Online, a community of more than 120 governments, online service providers, and civil society organizations working to eliminate violent extremist content on the internet. He also serves as the technology advisor to the nonprofit Surveillance Technology Oversight Project (S.T.O.P.) and on the Software Safety Standards Panel at the nonprofit Internet Safety Labs.

Justin has consulted for and advised everyone from CEOs and government officials to investors, attorneys, product managers, communications strategists, and threat intelligence teams, including in volatile, complex, and high-risk scenarios. He provides expert witness services on litigation matters related to cybersecurity and data privacy.

Prior to his current positions, he spent time at New America, the Laboratory for Analytic Sciences, and the Tech, Law, & Security Program at American University Washington College of Law, among others. He was a fellow at Duke Law School’s Center on Law & Technology and a fellow at Stanford University’s U.S.-Russia Forum, where he participated in Track II dialogues with Russian counterparts on international security issues. He co-founded Ethical Tech at Duke University, where he led research, events, and policy education programs on cybersecurity, data privacy, and artificial intelligence. He previously wrote a Slate Magazine op-ed column on technology, privacy, and public policy and a WIRED Magazine column on technology and geopolitics. He is sanctioned by the Russian Ministry of Foreign Affairs.

He has testified to Congress; spoken at the White House, the United Nations, and NATO; and briefed White House officials, members of European Parliament, and many other policymakers around the world. He has written hundreds of articles — including for The Atlantic, Barron’s, The Daily Beast, Foreign Affairs, Foreign Policy, The Guardian, Slate Magazine, and The Washington Post — and numerous reports, book chapters, journal articles, and privately commissioned assessments. He has been interviewed on BBC, CNBC, CNN, Deutsche Welle, Marketplace, NPR, PBS NewsHour, SHOWTIME’s “VICE,” and many other national and international programs; and quoted in Bloomberg, CNN, The Economist, Financial Times, Fortune, Los Angeles Times, NBC, The New York Times, Politico, Reuters, Rolling Stone, and The Washington Post. His work has been featured on HBO’s “Last Week Tonight with John Oliver.”

He earned his M.A. in Security Studies from Georgetown University and his B.S. in Computer Science and his B.A. in Political Science from Duke University.