Viruses and worms

So, what's the difference between a virus and a worm? Well, to look at these, we need to compare what they are designed to do. Some people say we're comparing apples with apples because these two are really close to each other. However, when it comes to a virus, you need to understand it's simply a piece of malware that's designed to execute. When it executes, it likes to associate or attach itself to a file or program.

Those files and programs could be almost any file or program, but as a virus creator, I want to make sure the virus executes every time the OS fires up. So, many times, the virus creator will make sure it replaces system files such that every time the OS boots up, we make sure the machine is infected.

We can also infect other types of files or programs. For example, I can make my virus attach itself to Word, but that virus would only become active once the application is launched.

One of the biggest differences between...