If you've ever created an account for the url shortening service Bitly before, you'll want to listen up. Bitly has now announced via their blog that they have reason to believe that Bitly account credentials have been compromised and are suggesting users change their API keys and OAuth tokens.
We have reason to believe that Bitly account credentials have been compromised. We have no indication at this time that any accounts have been accessed without permission. For our users' protection, we have taken proactive steps to ensure the security of all accounts, including disconnecting all users' Facebook and Twitter accounts. All users can safely reconnect these accounts at their next login.
Needless to say, there is a ton of apps and services out there that make use of Bitly so this is something you're going to want to act on as soon as possible if it applies to you. You can head on over to the Bitly blog for the full details and instructions on how to get it all sorted out.