Twitter has reported that encrypted password data for 250 000 users has been compromised. It appears that the attack was highly sophisticated, but engineers were able to stop it while it was still in progress.
Ars Technica reports that the affected users have been notified by email and their passwords automatically reset as a precaution.
In response to news of this attack, CIO offers an article about strong password creation. SlashGear also reports on Twitter’s rumoured intent to implement two-factor authentication.