Basic Computer Viruses

Types of Viruses

• Stealth Virus
• Disguises itself to prevent from being detected by antivirus software
• It alters its file size or conceals itself in memory
• Polymorphic Virus
• Act like a chameleon, changing its virus signature (binary pattern) every time it multiples and infects a new file
• Macro Virus
• Programmed as a macro embedded in a document, usually found in Microsoft Word and Excel
• Once it gets in to your computer, every document you produce will become infected
• Relatively new type of virus and may slip by your antivirus software if you don't have the most recent version installed