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From Virusology.com

Virusology - the science of analyzing and finding cures for viruses. (from virus and Greek lógos=science)

Virus definitions:

Computer virus

A virus is a program written to cause mischief or damage to a computer system. A mild virus might only be a slight nuisance, or even amusing. However, most viruses do damage, whether to your files, your registry, or even your hardware. Viruses are hard to detect, easy to propagate, and difficult to remove. Your computer can pick up a virus when you copy a essay writing services seemingly normal file from a diskette or download it from the Internet.

Biology virus

Microorganism without a cell wall, able to reproduce only by inserting itself into a host cell and hijacking the reproduction mechanism for its own ends. (The virus is then said to infest the cell.).


Prevention, detection and removal of computer viruses and spam can be done using an antivirus program. Here is a list of antivirus vendors/authors:

  • ALWIL Software
  • AhnLab
  • Aladdin
  • Avira (ex. H+BEDV Datentechnik)
  • Cat Computer Services
  • Central Command Software
  • Command Software
  • Computer Associates
  • Cybersoft
  • Doctor Web
  • ESET
  • F-Secure
  • Fortinet
  • Freedom
  • Frisk Software
  • GFI MailSecurity
  • GeCAD
  • Ggreat
  • Grisoft
  • HAURI
  • Hacksoft
  • Hiwire Computer & Security
  • Ikarus
  • Kaspersky Labs
  • Leprechaun Software
  • MKS
  • McAfee, Inc. (formerly known as Network Associates)
  • MessageLabs
  • Microsoft
  • MicroWorld Software
  • New Technology Wave Inc.
  • Norman Data Defense Systems
  • Panda Software
  • Per Systems
  • Portcullis Computer Security
  • Proland Software
  • Reflex Magnetics
  • Software Appliance Company
  • Softwin
  • Sophos
  • SpamHippo
  • Stiller Research
  • Sybari Software
  • Symantec Corporation
  • Trend Micro Incorporated
  • Unasoft - Ukranian Antivirus Center
  • VDS Advanced Research Group
  • VirusBuster Ltd.
  • ZoneLabs
  • iDefense