I Taught My AI Agent to Write YARA-L Rules That Actually Compile

This story is from 2026-10-25. It is preserved in the archive; the latest stories are on the live feed.

Ask a general AI model to write a YARA-L rule and you will usually get something that looks right and fails in the Rules Editor. These five mistakes show up again and again: metadata.event_type = "LOGIN" . That value doesn't exist. The enum is USER_LOGIN. target.port = "443" . Port is an integer. Q…