FBI reportedly tracks ‘biggest hack ever’ back to Russian email address

A hacker going by the name of “mr.grey” might have been at least a participant in, if not the mastermind behind, the creation of the world’s largest stolen login credentials database. A Reuters report yesterday says unsealed court documents released this past week in Milwaukee show that while investigating the massive collection, which contained details on 1.2 billion accounts, FBI agents reportedly uncovered a list of domain names and utilities the attackers used to send spam. Buried in those findings was an email address registered in 2010 to a “mistergrey.” Armed with a lead, agents scoured Russian hacking forums for posts authored by that same username. One from 2011 caught their attention: an advertisement for account information…

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