Zoo

1. When referring to a computer virus, a zoo is a location, such as a website, that contains a collection of computer viruses.

2. Zoo is a computer filename extension and compression program.

Intruder

An intruder is an individual or software program that enters a computer system without authorization.

Logic Bomb

A logic bomb is a piece of code inserted into an operating system or software application that implements a malicious function after a certain amount of time, or specific conditions are met. Logic bombs are often used with viruses, worms, and Trojan horses to time them to do maximum damage before being noticed. They perform actions like corrupting or altering data, reformatting a hard drive, and deleting important files.