TeslaCrypt ransomware now impossible to crack, researchers say

The latest version of the TeslaCrypt ransomware has tidied up a weakness in previous versions that in some cases allowed victims to recover their files without paying a ransom.

Cisco's Talos research group found that TeslaCrypt 3.0.1 has improved its implementation of a cryptographic algorithm making it impossible now to decrypt files. 

"We cannot say it loud and often enough, ransomware has become the black plague of the Internet," wrote Andrea Allievi and Holger Unterbrink, both security researchers with Cisco, in a blog post on Wednesday. "The adversaries are modifying and improving it in every version."

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