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After years of being outmaneuvered by snarky ransomware criminals who tease and brag about each new victim they claim, international authorities finally got their chance to turn the tables, and they aren't squandering it.

The top-notch trolling came after authorities from the US, UK, and Europol took down most of the infrastructure belonging to LockBit, a ransomware syndicate that has extorted more than $120 million from thousands of victims around the world. On Tuesday, most of the sites LockBit uses to shame its victims for being hacked, pressure them into paying, and brag of their hacking prowess began displaying content announcing the takedown. The seized infrastructure also hosted decryptors victims could use to recover their data.

The dark web site LockBit once used to name and shame victims, displaying entries such as "press releases," "LB Backend Leaks," and "LockbitSupp You've been banned from Lockbit 3.0."

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Authorities didn’t use the seized name-and-shame site solely for informational purposes. One section that appeared prominently gloated over the extraordinary extent of the system access investigators gained. Several images indicated they had control of /etc/shadow, a Linux file that stores cryptographically hashed passwords. This file, among the most security-sensitive ones in Linux, can be accessed only by a user with root, the highest level of system privileges.

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Law enforcement agencies including the FBI and the UK’s National Crime Agency have dealt a crippling blow to LockBit, one of the world’s most prolific cybercrime gangs, whose victims include Royal Mail and Boeing.

The 11 international agencies behind “Operation Cronos” said on Tuesday that the ransomware group—many of whose members are based in Russia—had been “locked out” of its own systems. Several of the group’s key members have been arrested, indicted, or identified and its core technology seized, including hacking tools and its “dark web” homepage.

Graeme Biggar, NCA director-general, said law enforcement officers had “successfully infiltrated and fundamentally disrupted LockBit.”