A logic bomb is a program that performs an activity when a
certain action occurs, such as an employee being terminated. A worm, which is similar to a virus, copies
itself repeatedly until no memory or disc space remains.
To detect computer viruses, antivirus programs have been developed. Besides detecting viruses,
antivirus programs also have utilities to remove or repair infected programs and files. Some damaged files
cannot be repaired and must be replaced with uninfected backup files. The table below outlines some
techniques used to protect computer systems.
Table
Techniques for Virus Protection and System Backup
Using Virus Protection Software Backing up Your System
Install virus protection software on every computer system. Develop a regular plan for copying and
storing important data and program files.
Before use, scan every floppy disk with a virus scan program to check for viruses. Implement a
backup plan and adhere to its guidelines.
Check all programs downloaded from the Internet or bulletin boards for viruses. Keep backup copies of
files in fireproof safes or vaults off-site.
If your system becomes virus infected and you have questions, contact the National Computer Security
Association (NCSA) for low-cost assistance (Elmhurst, 6 Nov. 1998).






Works Cited
Chambers, Anita R., and Zachary W. Peters. "Protecting Against Virus Attacks."Computers May
1998: 45-62.
Elmhurst, Mark. "Virus Infection: Where to Obtain Assistance"Word 97, Project 3.
http://www.scsite.com/wd97/pr3.htm (6 Nov. 1998).
Reed, Margaret E. An Introduction to Using Computers. Chicago: West Davidson Jones
Publishing Company, 1998.

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