
How do Trojan viruses infect your computer? Where does spam come from? How do hackers gain control over your computer?
Often times, the answer is via botnet.
A botnet is nothing more than a small program that people install (usually without realizing it) that “phones home” to another computer and carries out whatever instructions it’s given.
On it’s own, a single infected computer isn’t much to write home about. But when you’re talking about 100 or 1,000 (and often times even more) computers, a hacker has a lot of computing power at his disposal.