The FBI believes that a single hacker managed to obtain 1,2 billion accounts Internet. His name; Mr Grey. The accounts acquired by the hacker are said to be from social networks such as Facebook and Twitter.
According to Wired, these accounts were most likely stolen last year by a Russian team called CyberVor.
The data has been collected from 420.000 websites with a technique that uses botnets that look for SQL injection vulnerabilities. The same technique was used for attack on TalkTalk.
Hold Security: the biggest data leak in history
Disclosure was made last August by Hold Security, which then told reporters that Russian hackers were in the hands of 1,2 brilliant credentials and half a billion e-mail addresses.
In a subsequent investigation, the FBI identified a hacker known as "mr grey" or "mistergrey" according to documents published by Reuters.
The search for mr gray revealed spam-sending email tools as well as publications on a Russian hacking forum that offer lists of accounts from Facebook users, Twitter and VK, a Russian social network.
mr gray is currently wanted by the fbi, and is believed to be living in Russia.