Internet

Concept: Computer malware refers to malicious software designed to harm, disrupt, or gain unauthorized access to computer systems. Virus, worm, and Trojan horse are common types of malware with different behaviors and methods of spreading.

Difference Between Virus, Worm, and Trojan Horse:

Explanation:

• Computer Virus: Attaches itself to a legitimate program or file and spreads when the infected file is executed. It can corrupt data and affect system performance.
• Worm: A self-replicating malware that spreads automatically across networks without needing a host file or user action. It mainly affects network performance.
• Trojan Horse: A harmful program disguised as useful software. It tricks users into installing it and then performs malicious activities such as data theft or backdoor access.

Conclusion: A virus requires a host file and user action, a worm spreads independently across networks, and a Trojan horse disguises itself as legitimate software to deceive users and gain unauthorized access.