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  3. Trojan.Siteblocker


Risk Level 1: Very Low

February 7, 2014
March 19, 2014 11:13:23 AM
Systems Affected:
Windows 98, Windows 95, Windows XP, Windows Server 2008, Windows 7, Windows Me, Windows Vista, Windows NT, Windows Server 2003, Windows 2000
Trojan.Siteblocker is a Trojan horse that can perform actions with the user's Facebook account without their consent. It can also block websites from being visited on the compromised computer.

Antivirus Protection Dates

  • Initial Rapid Release version February 7, 2014 revision 025
  • Latest Rapid Release version February 7, 2014 revision 032
  • Initial Daily Certified version February 8, 2014 revision 009
  • Latest Daily Certified version February 8, 2014 revision 009
  • Initial Weekly Certified release date February 12, 2014
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
  • Payload: Performs unauthorized actions with Facebook accounts accessed on the compromised computer. Blocks attempts to view websites.


  • 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.
Writeup By: Sam Kim

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