Types of malware you can find in the wild (wild Internet) 2
Spyware – a type of malware that will spy on your activity (browsing habits, keystrokes, financial data, etc.) and send the information to servers controlled by cyber criminals.
Trojan Horse – malware that’s able to disguise itself as a normal file, to trick victims into downloading and installing more malware on their devices.
Virus – a form of malware that can copy itself so it can spread to other computers. Viruses attach themselves to other computer programs and execute malicious commands when the victim uses those compromised programs. Thus, viruses rely on the victim’s activity to spread.
Worm – a type of malware that exploits security holes in operating systems. Worms use the infected system’s resources and self-replicate. They spread independently, without requiring the victim to do anything.
Credit : https://heimdalsecurity.com