I've come across an iMac with Mountain Lion on it that has the cryptolocker desktop background on it with the message to pay up or face losing your data. The iMac owner did not have any Anti-Virus on it. He has no backup. . The owner has admitted being on 'adult' sites.
What are my options? I was aware a few months ago that you can't get the data back once this has been installed as it encrypts the contents of your HDD. Is this still the case? Can I get this key (fat chance!!)
And can i just install OSX on the same HDD from scratch and it wipes his data along with the Cryptolocker virus? That way he can at least use his iMac again....
(I am used to dealing with Windows, not OSX. )
And when OSX is re-installed - what malware/AV protection do you recommend - preferably free. I normally use AVAST Free or Kasperksy AV on Windows machines.