Consider this: You download some file from an Unknown Resource and you are not sure that it is virus-free. You scan it with the Antivirus software installed on your PC. And it is shown that the file is Completely harmless and contains no Virus. When you run that file you observe annoying behaviour of you PC. Now you are sure that your Antivirus wrongly checked the file you scanned as an harmless file when it contained malicious content. The virus starts deleting all your important files and corrupting your Hard-Drive. Gosh!You are in trouble now!
Antiviruses do have flaws! Not all Antivirus programs can discover all Viruses. Some antivirus programs might identify some files as Malicious while the same file is identified as completely harmless by other antivirus. Now what will you do in this case?
You need to scan your file with multiple Antivirus to be sure that it is completely harmless. But does this mean that you should install various antivirus programs in your PC? A Big NO!
Today I will tell you about a Web-Utility which will scan your file with multiple (38) antivirus programs with just a Single Click. Sounds good na?
VirusTotal is a service that analyzes suspicious files and facilitates the quick detection of viruses, worms, trojans, and all kinds of malware detected by 38 antivirus engines namely:
Even though this service is very useful for one or two files (as uploading those files is required), but scanning the entire computer with this service is not possible. So it is essential to have a Good antivirus program installed on your PC.
The warning description in the VirusTotal official website clearly states:
VirusTotal is not substitute any antivirus software installed in a PC, as it only scans individual files on demand. It does not offer permanent protection for the user’s system either.
Although the detection rate afforded by the use of multiple antivirus engines is far superior to that offered by just one product, these results DO NOT guarantee the harmlessness of a file.
Inspite of all this, let me tell you my personal opinion. I have never recieved a false feedback from VirusTotal. Everytime, when all the Antivirus engines in VirusTotal describe a file as Harmless, it indeed is!