Johann Hofmann

I work on AI Security in Google Chrome. I live in the Boston Area, Massachusetts.

working on: Making browser AI features harder to abuse.
reading: Two books at once, badly.
elsewhere: email ·github ·mastodon

updated by hand, 12 Aug 2026

Recent writing

08-12 Notes on shipping a permission prompt Four rewrites, one dialog, and the part nobody sees. #engineering 06-30 Why tab titles lie A short investigation that ended somewhere I did not expect. #browsers 05-04 A small tool for diffing config files Eighty lines of Python I now use every day. #tools 02-18 Three years of notes in plain text What survived, and what I quietly stopped doing. #notes