Computer worm
A computer worm is a type of malicious software that can spread from computer to computer over a network or the internet. It is different from a virus because it does not need to attach itself to another program in order to spread.
When a computer is infected with a worm, the worm can replicate itself and spread to other computers without the user knowing. It can cause damage to the computer, slow it down, and even disable it completely.
Worms can also be used to steal information, such as passwords or financial data. They can also be used to create backdoors in computer systems, which allow attackers to gain unauthorized access.
It is important to have up-to-date antivirus software and firewalls in place to protect against computer worms and other types of malware. It is also important to be cautious when downloading and opening files from unknown sources.