Difference Between Computer Viruses, Worms and Trojans

To enhance internet security

To provide free software

To improve computer performance

To make money illegally

Worm

Antivirus

Trojan

Virus

Through installing antivirus software

By updating the operating system

Through email attachments

By cleaning the computer

Enhances firewall security

Steals sensitive data

Speeds up the computer

Creates backups of your files

Demands money to release your data

Encrypts data for security

Deletes all data immediately

Provides data recovery services

Gathers private information secretly

Blocks harmful websites

Offers free internet access

Cleans junk files from your system

Viruses can replicate without a host file

Viruses are beneficial to network security

Worms can replicate themselves without human help

Worms enhance the computer's performance

Promoting antivirus software

Offering software updates

Sending emails

Downloading infected files

To secure personal data

For cyber espionage

For cyber warfare

For hacktivism

They require a user to open a file

They protect against spyware

They use computer networks to spread

They are manually installed by users