In an official statement, the company’s CEO said, “The users who have connected their Facebook or Twitter accounts to the Bitly service will need to re-connect their account at the next login.”
Bitly has revamped the OAuth token and API key specifically as a part of its security update, sources from the company said.

Announcing the changes on its official blog, Bitly said , “Existing users will need to reset their account password, change their API key and OAuth token and reconnect their Facebook and Twitter profiles with their Bitly account.”
The post further adds, “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.”
Bitly has also clarified that the user credentials with social forums like Facebook and Twitter have been nullified. With these changes, the users will no longer be able to post through Bitly to their Twitter and Facebook accounts until they reconnect them.