Victims of the widespread TeslaCrypt ransomware are in luck: Security researchers have created a tool that can decrypt files affected by recent versions of the malicious program.

Surprisingly, the TeslaCrypt creators themselves helped the researchers.

TeslaCrypt first appeared in early 2015 and stood out by targeting game-related user content, such as save files and custom maps, in addition to personal documents and pictures — 185 different file extensions in total.

The program had some moderate success in the beginning, earning its creators $76,522 in less than two months. However, in April 2015, researchers from Cisco Systems discovered a flaw in the ransomware program that allowed them to create a decryption tool for some of its variants.

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