1. /
  2. Security Response/
  3. Jos.1000


Risk Level 1: Very Low

December 2, 1990
February 13, 2007 11:34:11 AM
Also Known As:
Jabb, Jabberwoc
Systems Affected:

The JOS.1000 virus is a rather simple .COM file infecting virus that will not infect files with a size of 3,000 bytes or less, or the COMMAND.COM file.

Antivirus Protection Dates

  • Initial Rapid Release version December 20, 2000
  • Latest Rapid Release version July 12, 2008 revision 018
  • Initial Daily Certified version December 20, 2000
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date pending
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Search Threats

Search by name
Example: W32.Beagle.AG@mm
STAR Antimalware Protection Technologies
Internet Security Threat Report