Nimda offered malicious downloads through emails and LANs and changed existing websites. This worm appeared as a love letter through email attachments, damaging over 10 million computers. It encrypted the Windows users’ files and asked for payment to recover them. It was the first internet worm to have a massive impact. Compared to other types of malware, like trojans, internet worms are more dangerous because they spread on their own, and they can easily bypass many forms of network security, such as firewalls. Internet worms usually utilize bugs in computer software to attack the systems. By spreading by itself, the worm infects computers and systems without showing any signs to users. (also computer worm) Internet worm definitionĪn internet worm is a type of malware that self-replicates and distributes copies of itself across a network.
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