CHICAGO (WLS) -- The ABC7 I-Team is investigating that massive Yahoo cyberattack involving a billion accounts worldwide. This is the second time this year Yahoo has announced a significant breach. In ...

Yahoo on Wednesday afternoon revealed that hackers made off with the user data of more than 1 billion accounts. The breach occurred in August 2013, according to Yahoo, and is believed to be separate ...

Late Thursday Yahoo! acknowledged hackers accessed a number of its Mail accounts through a third party and that the affected accounts must now reset their passwords. If you didn't know your Yahoo!