Yesterday, after I downloaded a free software to test on my pc, I noticed that most of my files with extension (.txt, .doc,.pdf., .jpg, .gif and other files) were changed to (.txt.viCrypt, .doc.viCrypt, .pdf.viCrypt, .jpg.viCrypt, .png.viCrypt). It caused all my important documents damaged and failed to open. I had tried to remove the .viCrypt extension [...]