1. Symantec/
  2. Security Response/
  3. Adware.NetOptimizer


February 13, 2007 11:33:52 AM
Avenue Media
Risk Impact:
File Names:
ioptiXXX.dll nemXXX.dll wsemXXX.dll optimize.exe optimizeXXX.exe actalert.exe
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP


Adware.NetOptimizer is a program that creates a connection to a server from which it downloads and displays advertisements.

Note: Definitions prior to March 31, 2005 may detect this threat as Adware.NetOptimizer.B.


The files are detected as Adware.NetOptimizer. Pop-up advertisements are displayed on the computer.


This adware program must be manually installed. However, there are several known programs that also install Adware.NetOptimizer.

Antivirus Protection Dates

  • Initial Rapid Release version October 2, 2014 revision 022
  • Latest Rapid Release version January 17, 2017 revision 025
  • Initial Daily Certified version September 16, 2003 revision 004
  • Latest Daily Certified version January 18, 2017 revision 001
  • Initial Weekly Certified release date September 17, 2003
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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