Ransomware Petya encrypts hard drives
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It modifies the MBR....
https://blog.gdatasoftware.com/2016/03/28213-ransomware-petya-encrypts-hard-drives
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The question must be asked... if they only go after HR, is it so bad?
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@scottalanmiller said:
The question must be asked... if they only go after HR, is it so bad?
I share your sentiment but I'd still have to fix it

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@MattSpeller said:
@scottalanmiller said:
The question must be asked... if they only go after HR, is it so bad?
I share your sentiment but I'd still have to fix it

Nothing to fix, just reinstall and pay the ransom.
Oh, and it only attacks HR storing stuff locally, I see

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Petya ransomware victims can now unlock infected computers without paying.
http://www.bbc.com/news/technology-36014810