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Some people think that a computer worm and computer virus are the same things because the two behave similarly.

Drop other malware like spyware or ransomware.

Once a computer worm has breached your computer’s defenses it can perform several malicious actions:

External devices: Worms can infect USB sticks and external hard drives.

Instant messengers (IMs): All types of malware, including worms, can spread through text messages and IM platforms such as Internet Relay Chat (IRC).

Social networks: Social platforms like MySpace have been affected by certain types of worms.

File sharing: P2P file networks can carry malware like worms.

Security holes: Some worm variants can infiltrate a system by exploiting software vulnerabilities.

Networks: Worms can self-replicate across networks via shared access.

Spear-Phishing: Targeted phishing attempts can carry dangerous malware like ransomware cryptoworms.

Such emails may also invite users to click malicious links or visit websites designed to infect users with worms.

Phishing: Fraudulent emails that look authentic can carry worms in corrupt attachments.

A worm is a type of Trojan because it normally relies on social engineering to attack systems.

For example, a Trojan may pretend to be legitimate software. To keep it brief, a Trojan uses trickery and social engineering to deceive people into running it. Naturally, you must be wondering what is a Trojan and how does it relate to computer worms? Typically, a worm spreads across a network through your Internet or LAN (Local Area Network) connection. Worm definition (computer)Ī computer worm is a subset of the Trojan horse malware that can propagate or self-replicate from one computer to another without human activation after breaching a system. They may also seem a bit coldblooded because they can be remorselessly destructive. Similar to real worms, you can say that computer worms don’t have much of a backbone because they often rely on trickery to infect their hosts. And if you’re thinking in computing terms, the malware may spring to mind. Or you may think of the cold-blooded invertebrate animals that wiggle across the Earth’s surface. Several things may come to mind when you think of the word “worm." You may think of delicious soft chewie candies that are sugary and maybe a little sour.