SUNNYVALE, Calif.—Yahoo has admitted in its latest SEC filing that it knew in 2014 that attackers were on its network and stole information from 500 million accounts, Threat Post reported.
As CUToday.info reported, in September Yahoo confirmed that information from at least 500-million Yahoo accounts was stolen from the company in 2014, making the hack one of the largest in U.S. history in terms of user accounts.
In September, the company did not acknowledge that it was aware of the attack two years ago.
The SEC filing also contains a confirmation from Yahoo that Verizon's multibillion-dollar acquisition of Yahoo's core business could be in jeopardy, and that Verizon could seek to terminate or renegotiate the terms of the sale, Threat Post reported.
Yahoo initially reported that sensitive financial data like bank account numbers and credit card data are not believed to be included in the stolen information. However, many cyber security experts feel as the U.S. migrates to EMV that crooks are turning more toward creating profiles of victims to gain access to financial accounts, using other methods to get at the money than payment cards.