Live AWS keys in 75 throwaway repos, each made public for one of five windows from 60 seconds to 12 hours, every use logged. The keys were tripwires; the real question was who notices a private repo going public, and what they do once they're in.

The most useful finding is the dull one: re-hiding the repo does nothing. One busy harvester kept re-validating the captured keys for a day after the repos went private again. Only rotating the key stops it.

This came out of building a monitor for exactly these repo-setting changes.