What is the name given a technological program that typically copies itself and moves through a computer system in order to disrupt a computer or computer network?

Class of software called "malware"

Explanation:

Some features of malware software:

Viruses, worms, Trojans and bots are malware.  Malware is the abbreviation for "malicious software" (malicious code).  Specifically designed to damage, interrupt, illegally steal data from a network. A Trojan it is  software that looks legitimate. Users are typically tricked into loading and executing it on their systems.  

You ensure that you reach your goals when you set goals for yourself, you will be motivated to do them

They were fooled by a lot of people