1. Symantec/
  2. Security Response/
  3. Spyware.CWSAddClass


February 13, 2007 11:39:40 AM
Risk Impact:
File Names:
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP


Spyware.CWSAddClass is an Internet Explorer search function hijacker. It changes the search settings to a new search engine and adds a prefix to all the Web pages, so that typed Web addresses are channeled through an intermediary "enhanced-http site," which captures Internet-surfing information.


One or more files is detected as Spyware.CWSAddClass.


Spyware.CWSAddClass is typically installed silently through an ActiveX installer.

Antivirus Protection Dates

  • Initial Rapid Release version October 2, 2014 revision 022
  • Latest Rapid Release version February 1, 2015 revision 020
  • Initial Daily Certified version September 25, 2004
  • Latest Daily Certified version January 17, 2008 revision 033
  • Initial Weekly Certified release date September 29, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

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STAR Antimalware Protection Technologies
2016 Internet Security Threat Report, Volume 21
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