Yahoo Mail Accounts Hacked

Yahoo announced on Thursday that an unspecified number of its Mail users have had their usernames and passwords compromised.

The hack appears to have taken place via a compromised third party database, and Yahoo has taken the precaution of resetting the passwords of affected users, Mashable reports.

"Our ongoing investigation shows that malicious computer software used the list of usernames and passwords to access Yahoo Mail accounts," Yahoo senior VP Jay Rossiter said in a Tumblr post. "The information sought in the attack seems to be names and email addresses from the affected accounts’ most recent sent emails ... we have no evidence that they were obtained directly from Yahoo’s systems."

Rossiter wouldn't say what third-party database contained all the emails. But if your account was one of the ones affected, your password has been reset automatically and you should be getting an email or text message (if you've set up two-factor authentication) with further details.

Yahoo says it's working with law enforcement to find the perpetrators.