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Computer Viruses Beginning of Paper Explain the difference between viruses, worms and Trojan horses in the context of computer and data security. Discuss the measures that need to be taken in order to maintain security. There is a type of computer program that is designed and written to destroy, alter or damage data st .... Middle of Paper .... A computer virus is a program that is designed to replicate and spread itself on its own, preferably without anybody knowing it exists. They spread by attaching themselves to other programs (such as your word processing or spreadsheet programs). Then when a file with a virus attached to it is executed the virus will also be executed. Viruses can also attach themselves to system files the computer uses every time it is switched on, these are called boot sector viruses, and can cause persistent and widespread disruption to the computer. Vi .... 692 words | 3 pages Subscription Length Price Join 30 days membership (recurring) $19.95 90 days membership (recurring) $39.95 180 days membership (non-recurring) $69.95