According to Twitter, it was hacked and 250K user’s were affected, so they received emails from the company to change their password.
This is not the first time this has happened, but this time it was a real hack, rather than a blend of real hacks and “false alarm” blast of emails like last time.
In a blog posting Friday, Twitter says “This week, we detected unusual access patterns that led to us identifying unauthorized access attempts to Twitter user data. We discovered one live attack and were able to shut it down in process moments later. However, our investigation has thus far indicated that the attackers may have had access to limited user information – usernames, email addresses, session tokens and encrypted/salted versions of passwords – for approximately 250,000 users.”
Twitter is generally used to broadcast messages to the public, so the hacking might not immediately have yielded any important secrets. But the stolen credentials could be used to eavesdrop on private messages or track which Internet address a user is posting from.