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.