Yahoo on Wednesday revealed that more than one billion user accounts may have been compromised in a hack that occurred in 2013. In a statement, Yahoo said it believes "an unauthorized third party, in August 2013, stole data associated with more than one billion user accounts," including names, email addresses, phone numbers, and possibly security questions and answers. The company does not believe the system where payment and bank information is stored was affected, however.
Back in September, Yahoo announced that nearly 500 million accounts had been compromised in a 2014 hack; on Wednesday, the company said it believes this newly disclosed breach was separate from that incident. You can read its full statement on Wednesday's announcement below. Kimberly Alters