Risk Level 1: Very Low

February 13, 2007 11:58:04 AM
Also Known As:
Joke, Jocker, Wabik

Joker is an overwriting file-infector virus. When it infects a file, Joker replaces the original with itself instead of moving the original information. This replacement makes removal difficult to impossible. Joker randomly displays joke error messages.

Sample messages displayed are:

You have water in your co-processor

Hard drive has been destroyed

Antivirus Protection Dates

  • Initial Rapid Release version December 20, 2000
  • Latest Rapid Release version May 17, 2013 revision 006
  • Initial Daily Certified version December 20, 2000
  • Latest Daily Certified version May 17, 2013 revision 008
  • Initial Weekly Certified release date pending
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment


  • Wild Level: Low
  • Number of Infections: 0 - 49
  • Number of Sites: 0 - 2
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Easy


  • Damage Level: Low


  • Distribution Level: Low

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