Yahoo says at least 500 million accounts hacked in 2014

Yahoo Inc said on Thursday information associated with at least 500 million user accounts was stolen from its network in 2014 by what it believed was a “state-sponsored actor.”

The data stolen may have included names, email addresses, telephone numbers, dates of birth and hashed passwords but may not have included unprotected passwords, payment card data or bank account information, the company said.

Yahoo said it was working with law enforcement on the matter.