New York: In what may be largest data hack at an email provider, Yahoo says that hackers stole data from more than one billion user accounts in August 2013.
That could mean trouble for any users who reused their Yahoo password for other online accounts.
The Sunnyvale, California, company was also home to what's now most likely the second largest hack in history, one that exposed 500 million Yahoo accounts.
The company disclosed that breach in September. Yahoo said it hasn't identified the intrusion associated with this theft.
Yahoo says the information stolen may include names, email addresses, phone numbers, birthdates and security questions and answers. The company says it believes bank-account information and payment-card data were not affected.
But the company said hackers may have also stolen passwords from the affected accounts.
With AP Inputs