The document discusses computer viruses, including their types, how to detect them, and how to eliminate them. It describes three main types of computer viruses: system/boot record viruses that attack parts of the computer used to run programs, file viruses that attach to program files, and some common virus names. It lists symptoms of a computer virus infection like programs taking longer to load or less memory available. It recommends using antivirus software like McAfee or Norton and firewalls to detect and eliminate viruses.

1. Dr. Mario’s
VIRUS DETECTION AND
PREVENTION
DLSPS - Graduate School of Business
Prepared by:
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2. Table of Contents
• Introduction
• Computer Virus Types
• Detecting Computer Viruses
• “Catching” a Computer Virus
• Detecting and Eliminating Computer Viruses
• References

3. Introduction
• A computer virus is a computer program that can copy itself and
infect a computer without permission or knowledge of the user.
(www.wikipedia.com). The term comes from the term virus in
biology. Similar to the way a biological virus works, a computer
virus reproduces by making (possibly modified) copies of itself in
the computer's memory, storage, or over a network.
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4. Computer Type Viruses
• a) Computer System / Boot Record Viruses
– Attack parts of your computer used to run programs
• b) Computer File Viruses
– Clings to various programs files`
– Sample files: .COM, .EXE, .DOC
• c) Common Computer Virus Names
– Stoned, Love Bug,
– Check “Data Fellows Computer Virus Information”
– Check McAfee/Norton/TrendMicro website
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5. How Do I Know I Have A Computer
Virus?
• Programs take longer to load than normal
• Hard drive runs out of hard disk space
• Files have strange names you don’t recognize
• Conventional memory isles than it used to be
• Programs run erratically
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6. How Can You “Catch” A Computer
Virus?
• Flash disks
• Internet
• Email
• Networks
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7. How Do I Detect and Eliminate
Computer Viruses?
• Use anti virus software
– McAfee
– Norton
• TrendMicro (online)
• Use firewall
– Kerio
– ZoneAlarm
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8. REFERENCES: References
• 1. ^ Vesselin Bontchev. Macro Virus Identification Problems. FRISK Software International.
• 2. ^ Malware Evolution: MacOS X Vulnerabilities 2005 - 2006. Kaspersky Lab (July 24, 2006).
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• 3. ^ McAfee. McAfee discovers first Linux virus. news article.
•
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4. ^ Axel Boldt. Bliss, a Linux "virus". news article.
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