Malware is malicious software that damages systems or steals data. Know the types to defend against them.
Viruses attach to legitimate programs and spread when you run infected files.
Worms spread automatically across networks by exploiting vulnerabilities. No user action required.
Trojans disguise themselves as legitimate software. They open backdoors or steal credentials.
Ransomware encrypts your files and demands payment for the key. Prevention and backups are your only reliable defense.