Yahoo confirms major breach that could be the largest hack of all time

As expected, Yahoo revealed a massive data breach of its services on Thursday.

Yahoo “has confirmed that a copy of certain user account information was stolen from the company’s network in late 2014 by what it believes is a state-sponsored actor,” the company posted on its investor relations page.

Yahoo believes that “at least” 500 million user accounts were stolen, which would make it the biggest breach of all time, bigger than the MySpace breach of 427 million user accounts.

The breach has turned out to be larger than previously expected. Recode’s Kara Swisher reported on Thursday that the breach could have implications for the $4.8 billion sale of Yahoo to Verizon.

  • SDMatt

    Great. I’ve had a Yahoo mail account for eons. About 5 years ago a bunch of spam emails were sent to my contacts from “me.” So I deleted the contacts – which Yahoo mail added unknown to me as a “courtesy” – and then I changed my password to something extremely long & complex.

    Earlier this year it happened again, so either someone cracked my password – and so there’s no point in having them – or more likely someone broke into Yahoo’s server full of contacts and not my particular account.

    I have 3 other email addys but man Yahoo email is a pain.

    • The Butterfly

      Happened to me a few months ago too. Spam messages were bouncing back to me as if I had sent them out. I changed my password too but didn’t seem to help things. I still use Classic even after they tried to destroy it because of the simplicity.

    • Yahoo is giving me trouble, too.