How to Choose an Antivirus Program
A computer virus is simply ONE kind of a program often called "maliceware" (other maliceware consists of trojans and worms), although nowadays, the two phrases are just about interchangeable. To qualify as a virus, the program needs to 1) replicate itself and a couple of) set off itself at sure events.
So how DO you detect a virus? There are two frequent approaches: 1) signature detection -- search for virus code that is distinct to the virus/variant, and a couple of) look for virus-like exercise, like modifying system records data, opening of internet connection when none was requested for, etc.
Signature detection was the best strategy to detect viruses, but as you'll be able to guess, this requires the anti-virus corporations to get a copy of the virus, analyze it to dying, TH...