Three Top Russian Cybercrime Forums Hacked

tsu doh nimh shares a report: Over the past few weeks, three of the longest running and most venerated Russian-language online forums serving thousands of experienced cybercriminals have been hacked. In two of the intrusions, the attackers made off with the forums' user databases, including email and Internet addresses and hashed passwords. Members of all three forums are worried the incidents could serve as a virtual Rosetta Stone for connecting the real-life identities of the same users across multiple crime forums. On Tuesday, someone dumped thousands of usernames, email addresses and obfuscated passwords on the dark web apparently pilfered from Mazafaka (a.k.a. "Maza," "MFclub"), an exclusive crime forum that has for more than a decade played host to some of the most experienced and infamous Russian cyberthieves.

At the top of a 35-page PDF leaked online is a private encryption key allegedly used by Maza administrators. The database also includes ICQ numbers for many users. ICQ, also known as "I seek you," was an instant message platform trusted by countless early denizens of these older crime forums before its use fell out of fashion in favor of more private networks, such as Jabber and Telegram. This is notable because ICQ numbers tied to specific accounts often are a reliable data point that security researchers can use to connect multiple accounts to the same user across many forums and different nicknames over time. Cyber intelligence firm Intel 471 assesses that the leaked Maza database is legitimate.

Read more of this story at Slashdot.