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Sean O’Brien is a lecturer in Cybersecurity at Yale Law School and a subject-matter expert in cybersecurity, privacy, Web3, and Free and Open Source Software (FOSS). He is Visiting Fellow at the Information Society Project at Yale Law School, where he founded and leads the Privacy Lab initiative. Sean is Open Source Lead at Tari Labs & Yat Labs and is Head Tutor for Oxford Cyber Security for Business Leaders. He is an advisor for Panquake and editor for

Featured Projects

Cybersecurity (LAW 21314)

Development of unique, hands-on curriculum for Yale Law School. Kali Linux pentesting, Raspberry Pis, and more.
Powerful, next generation messaging technology on a custom blockchain with no advertising or manipulation.
Founder of this initiative of the Information Society Project. Forensic analysis of mobile apps, with press in 100+ outlets.
years in higher education
100 +
Hands-on Tech Workshops
Years In Open Source (FOSS)

“Sean has distinguished himself as a leader within the Free Software community. He is capable of communicating about the Free Software movement and information technology because he is immersed in it. I have gained a deep appreciation for Sean’s knowledge in his roles as a developer, activist, and educator, as well as his ability to understand and think critically at many different levels and to communicate about difficult issues to people with diverse backgrounds.”

Digital Self-Defense Training

I show people how to be safe and aware while traversing the digital landscape. Learners must approach privacy and cybersecurity step-by-step, integrating strategies rather than relying on catch-all solutions.

Cyber Attack Demos

I want people to see cyber attacks first-hand so they can guard against them. My demonstrations contain safe, simplified examples of real-world attacks that are designed for audience interaction.

Ban Face Surveillance!

Facial Recognition Technology (FRT) is a serious threat to privacy, autonomy, and freedom of expression. I am passionately opposed to Face Surveillance via FRT and am pursuing bans at Yale University and for the City of New Haven, Connecticut.