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[yoga]

Mates,
i have a good friend who is CAD/CAM technical constructor.
I warned him many times that he has to double his info because of security problems. He did not follow my precautions till..
yesterday he informed me, crying, that some bad virus attacked his PC and coded all of files (excluding .MP3, .MP4 and video).
Coded files are unusable. He has to pay money to uncode these ones.
I again spoke about option Sky of some sites.
He agreed but asked me is it possible to work on these Sky files without coping the files on PC, working and again send to Sky.
Once again:
He wants to work on files being in Sky.
Do You know some way or program which complete this task?
Thank You for Yr time and help.
yoga