Complex Ransomware Outsmarting the Anti Virus Industry

Heard about this tactic at the last ISSA-COS meeting:

The first piece of ransomware to use a sophisticated encryption algorithm, Gpcode.ac, was detected in January 2006 and used the RSA algorithm to create a 56-bit key. Since then, the author of Gpcode has released several increasingly complex variants of the virus and in June released Gpcode.ag, which used a 660-bit key.

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