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Japan police fight ransomware attacks by restoring locked files

Exclusive: 3 companies recovered data without paying attackers

Ransomware attacks have grown more frequent and sophisticated in recent years. (Photo by Akira Kodaka)

TOKYO -- Japanese police have succeeded in decrypting corporate data locked by ransomware, Nikkei has learned, giving law enforcement a new tool to fight cybercrime.

Since April, teams at the National Police Agency have recovered data at three companies targeted by LockBit ransomware, according to a person familiar with the cases. Ransomware encrypts files on the target's systems, rendering them inaccessible, and demands payment to restore access.

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