Glossary W & X

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• WIA:

  Windows Image Acquisition.

  Wi-Fi:

  Is the trademark of Wi-Fi Alliance, which is a non profit association of companies, that promote wireless local area network (WLAN) technology based on the IEEE 802.11 standards. It certifies products that conform to these standards.

  WMA:

  Windows Media Audio.

  WMV:

  Windows Media Video.

  Worms:

  They are more insidious and potentially more devastating than viruses.
  A worm does not require a host like a virus to cause trouble, it is able to replicate itself on your system.
  Worms can be active or passive.
  A passive worm can be unleashed by such action as a double click.
  An active worm can launch itself from a received e-mail
  (not necessarily in an attachment).

  Worms can perform such actions as e-mailing everyone in your address book and disable anti-virus utilities (eg. the Goner worm).
  They may be disguised as a Trojan horse.
  Due to its copying nature it can consume much of a system's memory.

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