Common Network Risks

Risk	Explanation
Adware	Displays unwanted advertisements
Spyware	Collects and transmits information without the user’s knowledge
Virus	Damages files or changes system settings
Worm	Spreads through computers or networks without requiring much user interaction
Trojan	Appears legitimate but contains harmful code
Ransomware	Locks files or systems and demands payment
Rootkit	Allows hidden administrator-level access to a device

Key Difference: Virus Versus Worm

Virus	Worm
Usually attaches itself to a file or program	Can spread automatically through a network
Often requires user action	May spread without direct user action