Yahoo suffers world's biggest hack affecting 1 billion users

SAN FRANCISCO — Yahoo has discovered a 3-year-old security breach that enabled a hacker to compromise more than 1 billion user accounts, breaking the company's own humiliating record for the biggest security breach in history.

The digital heist disclosed Wednesday occurred in August 2013, more than a year before a separate hack that Yahoo announced nearly three months ago . That breach affected at least 500 million users, which had been the most far-reaching hack until the latest revelation.

"It's shocking," security expert Avivah Litan of Gartner Inc.

http://www.startribune.com/yahoo-says-hackers-stole-information-from-over-1b-accounts/406612116/