Explanation
Viruses, Trojan horses, and worms are malicious software used to harm a computer system. A Trojan Horse is a program that allows the attacker to control the user's computer from a remote location. Additional Information The list below shows some of the activities that the attacker can perform using a Trojan horse: Electronic money theft . Modifying files on the user’s computer Damage the user’s computer (crashing, blue screen of death, etc.) Stealing sensitive data such as stored passwords, credit card information, etc. A worm is a malicious computer program that replicates itself usually over a computer network. A virus is a computer program that attaches itself to legitimate programs and files without the user's consent. A computer virus may be used to; Access private data such as user id and passwords. Display annoying messages to the user. Corrupt data on your computer. Log the user’s keystrokes.