San Francisco, March 18 : One billion Yahoo accounts are on sale at $200,000, a media report has said.
The dates of birth, telephone numbers and security questions could still be useful to an adept cyberthief but the passwords are not working, a New York Times report said.
Four Russian men, two hackers and two intelligence officers responsible for a 2014 intrusion into Yahoo’s systems that affected 500 million user accounts, US Federal prosecutors unsealed charge against them.
Despite this, data on one billion accounts – stolen in another attack on the company in 2013 – appeared to remain available on underground hacker forums on Friday, the NYT report added.
The authorities were unresponsive about their investigation of the 2013 attack, the largest known contravention of a private company’s computer systems.
The 2014 hacking of Yahoo’s servers is the second largest.
“We’re not willing to comment right now if there is a connection between the two investigations,” Malcolm Palmore, who oversees the Federal Bureau of Investigation’s cybersecurity division in San Francisco, said on Wednesday in a brief interview.