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Hello, I'm trying some solution to secure my system as I'm quite scared by cryptoviruses. I already have external offline backups and drive images, but I'd prefer prevention more than a.. restore. Questions: - are there some permission settings that could block a program trying to encrypt user folders or entire drives? (without limiting normal usage too much!) - on Win7 Pro I'm trying SRP (Software Restriction Policies) whitelisting, but it isn't perfect as various programs and setups still need to execute files in Appdata or Temp folders. Also, this wouldn't block anything disguised as a valid installer. Do you have some tips about this feature? - what are some decent free antiviruses now? (AVG became spyware) - other advices?