Yahoo's announcement (link changed since some of these comments were posted) says the "vast majority" used bcrypt. I've been getting an "Unexpected sign-in att

Yahoo's announcement (link changed since some of these comments were posted) says the "vast majority" used bcrypt. I've been getting an "Unexpected sign-in attempt" email from Yahoo every day for the last couple of weeks, but I don't see any evidence that the attempts were successful.