24.08.2017, 10:04
About the part of viruses: As far as I know, Antiviruses have a "database" of "virus signatures" (idk if this is the correct term) , VirusTotal uses a little api of multiple Antiviruses, so it is not that good like a complete Antivirus. Also I think that the little api detect functions from C / C++ headers that are for a specified OS (That makes viruses to be on multiple OSs).