Jack is currently a Senior Technical Advisor at the Cybersecurity and Infrastructure Security Agency, where he helps lead the agency’s work on Secure by Design and open source software security.
Before CISA, Jack worked as a TechCongress Fellow for Senator Gary Peters, advising on cybersecurity policy, including election security and open source software security.
Jack previously was a Security Architect at Krebs Stamos Group.
Prior to that, Jack served as an Election Security Technical Advisor at CISA, where he created Crossfeed, a pilot to scan election assets nationwide.
Jack rose to top ranks in bug bounty programs, having identified over 350 vulnerabilities in companies including Google, Facebook, Uber, Yahoo, and the U.S. Department of Defense. He is ranked within the top 100 hackers all-time on HackerOne. For this work, Jack was named to Time Magazine’s list of the 25 Most Influential Teens of 2018.
After placing first in the Hack the Air Force bug bounty challenge, Jack joined the Defense Digital Service out of high school, where he helped run the Hack the Pentagon bug bounty portfolio, advised on the next iteration of the DoD Vulnerability Disclosure Program, and built innovative cybersecurity assessment tools.
Jack studied computer science at Stanford, where he worked as a researcher with the Stanford Empirical Security Research Group and the Stanford Internet Observatory
