If there are multiple breaches, this refers to the first.

A Sybil attack doesn't count (e.g. if someone manages to fraudulently sign up multiple times) – it has to be something where either data leaks that shouldn't have, or users can take actions impersonating other users. I won't count anything where people's worldcoins are stolen but no personal info is accessed and no other transactions or holdings are affected. The orb, the iris hash, the World App, and World IDs are all fair game.

If the issue is fixed before it's exploited, but the security flaw has been published, this still resolves YES.

Edit 7/31 for clarity: by "fair game" I just mean "these are some of the things I consider to be components of the Worldcoin system"