Which type of malware replicates itself without any user action?

A Worm is a standalone malware computer program that replicates itself in order to spread to other computers. It often uses a computer network to spread itself, relying on security vulnerabilities on the target computer to access it. Unlike a virus, a worm does not need to attach itself to an existing program or require user interaction to spread.

• Virus: Requires a host program and user action to execute and spread.
• Trojan: Disguises itself as legitimate software but carries out malicious activities, relying on user deception.
• Spyware: Gathers information about a person or organization without their knowledge and transmits it to another entity.