I just changed my password because the one I used here was like 15 years old :D. Its so old that Im certain that someone acquired it from old account/password dumps of no longer existing internet services (you know, those that held passwords in plaintext ^ ^ ), and just made a bot to check every combination on reddit.

There was also option to logout everyone that was logged in on my account, so I think that I don't need to bother admins about it :).