When describing malware, what is a difference between a virus and a worm?
- A virus focuses on gaining privileged access to a device, whereas a worm does not.
- A virus replicates itself by attaching to another file, whereas a worm can replicate itself independently.
- A virus can be used to launch a DoS attack (but not a DDoS), but a worm can be used to launch both DoS and DDoS attacks.
- A virus can be used to deliver advertisements without user consent, whereas a worm cannot.
Explanation: Malware can be classified as follows:
Virus (self-replicates by attaching to another program or file)
Worm (replicates independently of another program)
Trojan horse (masquerades as a legitimate file or program)
Rootkit (gains privileged access to a machine while concealing itself)
Spyware (collects information from a target system)
Adware (delivers advertisements with or without consent)
Bot (waits for commands from the hacker)
Ransomware (holds a computer system or data captive until payment isreceived)
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