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Unformatted text preview: Trapdoor an undocumented entry point intentionally written into a program. Usually for debugging purposes. Logic bomb malicious instructions that trigger on some event in the future, such as a particular time occurring. Zombie malicious instructions installed on a system that can be remotely triggered to carry out attacks such as DoS. Spreading of them: These nasty things can be in a program, a post script, email, or even if a pdf document. Clever email system help them a lot. Worm scan check your contacts table and send your friend email with the worm in. Worms can also actually log into the other machine to spread them. Virus Checkers: Virus checkers dont work well against polymorphic virus, which changes the order of its instructions....
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- Spring '10