Defend your computer from viruses
Have you ever had a file that you suspected might contain a virus? Your anti-virus scanner says the file is fine but still you have doubts. If so, go to www.virustotal.com.
Upload your file and they will scan it with 42 different anti-virus software applications.
All the big names are there like Kaspersky, Avast, F-Prot, McAfee, BitDefender, etc. They even have free anti-virus software packages like AVG.
There is also a page with some statistics of what they have found and some of those stats are disturbing. For example, more than half of the files they have tested contain some form of malware. I just wish they published which anti-virus performed the best i.e. picked up the most viruses and which ones performed the worst.
So before you install the crack for that game you pirated borrowed, run it through VirusTotal to see if there are any nasty infections hidden in the file.