COMPUTER THREATS SECURITY
WHAT IS A COMPUTER VIRUS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It requires a host program
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It moves or copies itself to a computer without the user’s knowledge
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It only executes when the host program is running
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It modifies other programs
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Detailed explanation-1: -A worm can replicate itself without any human interaction, and it does not need to attach itself to a software program to cause damage. Worms can be transmitted via software vulnerabilities.
Detailed explanation-2: -The true worms have soft, segmented bodies often more or less cylindrical in shape. The skin is covered by a layer of cuticle (a non-cellular substance secreted by the skin cells underneath), which is soft and is not made hard by the inclusion in it of other substances as is done in the Insects and Crustacea.
Detailed explanation-3: -Once a worm has entered your system, usually via a network connection or as a downloaded file, it can then run, self-replicate and propagate without a triggering event. A worm makes multiple copies of itself which then spread across the network or through an internet connection.
Detailed explanation-4: -Answer: (b) It propagates through the internet and e-mail. Explanation: A worm virus is a malicious file. This virus can be spread across a network without human aid. It also requires a large amount of bandwidth and memory.
Detailed explanation-5: -In addition to being able to spread unassisted, computer worms have the ability to self-replicate. This means that worms can create multiple copies of themselves to send to other computers. This often happens through the sending of mass emails to infected users’ email contacts.