Yahoo Believes All 3 Bln Accounts Impacted By 2013 Breach

(RTTNews) - Yahoo, the internet company acquired by Verizon Communications Inc. this year, now believes a 2013 security breach exposed all 3 billion of its users at the time.

The assessment compares with Yahoo's initial estimate that 1 billion accounts were compromised. The information stolen didn't include passwords in clear text, payment data or bank accounts, Yahoo said.

Verizon, which is combining Yahoo with its AOL business to attract more internet advertising, had negotiated a $350 million price cut on the deal after Yahoo disclosed the 2013 breach and a subsequent hack in 2014. Verizon and Altaba Inc., the former owner of the Yahoo Internet assets Verizon acquired, agreed earlier this year to split evenly the liability costs of consumer and business lawsuits related to the breach. Altaba also has to cover any shareholder liability costs.

Yahoo has said it wasn't able to identify who was responsible for the 2013 breach, though the U.S. government has accused Russia of directing the 2014 hack.