Many people tend to confuse the function of a virus with the one of adware, this misunderstanding of the basic of what each software is and how it operates causes users and organizations to take the wrong security measures that would protect them against attacks.
For starters, let’s define what they are: virus and adware are two different types of malware, each exploiting different aspects of computing architecture to carry out their payload. Malware is simply a category used to refer to software designed to disrupt normal system operations, example of malware are: virus, adware, spyware, Trojan, rootkit, bot, etc.
Let’s go back to our original topic and go over what makes a computer virus a virus, a Computer Virus
is a malicious program that can replicate itself without user interaction by exploits Operating System, Applications, and software vulnerabilities. What the virus does after it’s been executed is another story, though the common denominator is that it’ll disrupt normal system operations and it will attempt to replicate itself.
Something interesting about computer virus is that as much as they can be sophisticated programs most of them pray on users’ vulnerabilities for the initial installation, also known social engineering. “Good” virus writers also study human behavior and emotions hence the I Love you Virus
,they plan their initial attack to align themselves with special occasions, dates, …