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

Jos.1000

Risk Level 1: Very Low

Discovered:
December 2, 1990
Updated:
February 13, 2007 11:34:11 AM
Also Known As:
Jabb, Jabberwoc
Type:
Virus
Systems Affected:
DOS

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.

Threat Assessment

Wild

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

Damage

  • Damage Level: Low

Distribution

  • Distribution Level: Low
Note: On May 14, 2015, modifications will be made to the threat write-ups to streamline the content. The Threat Assessment section will no longer be published as this section is no longer relevant to today's threat landscape. The Risk Level will continue to be the main threat risk assessment indicator.

Search Threats

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