The Federal Security Service (FSB) of the Russian Federation has announced today that they shut down the REvil ransomware gang after U.S. authorities reported on the leader.
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Russia arrests REvil ransomware gang members, seize $6.6 million

The Federal Security Service (FSB) of the Russian Federation has announced today that they shut down the REvil ransomware gang after U.S. authorities reported on the leader.
Source