Senior Staff Technologist
Jacob is a lead developer on Let's Encrypt, the free and automated Certificate Authority. He also works on EFF's Encrypt the Web initiative and helps maintain the HTTPS Everywhere browser extension.
Prior to working at EFF, Jacob was on Twitter's anti-spam and security teams. On the security team, he implemented HTTPS-by-default with forward secrecy, key pinning, HSTS, and CSP. On anti-spam, he deployed new machine-learned models to detect and block spam in realtime. Before Twitter, he worked at Google, variously on the maps, transit, and shopping teams.