Is there a cure-all for cryptoviruses?
There is no cure-all for cryptovirus attacks. Cryptoviruses attack computer systems using the same tools that are used to protect computer systems. So, a weakness in the design of a secure cryptovirus implies a weakness in a block cipher, stream cipher, asymmetric cryptosystem, etc. A product that claims to protect you specifically from the threat of cryptoviruses is snake-oil. The best defense is to: verify the authenticity of all programs that you run, protect your machine from infiltration, use existing antiviral tools, be diligent about archiving data, and so forth.
