More than one billion Yahoo accounts have been hacked, the company announced on Wednesday, three months after it disclosed a separate data breach that affected more than 500 million accounts.

The hack disclosed today occurred in August 2013, and compromised names, email addresses, telephone numbers, dates of birth, passwords, and security questions and answers, according to Bob Lord, Yahoo's chief information security officer.

   "We have not been able to identify the intrusion associated with this theft," he said in a statement. "We believe this incident is likely distinct from the incident we disclosed on September 22, 2016."

Yahoo's investigators do not believe that any credit card data or bank account information was stolen, since it is handled by a separate system from the one that was hacked. Yahoo also said that the stolen passwords and some of the security questions and answers were hashed, meaning that the thieves would not be able to read them without additional information from a separate database. Read More Here