mslogon.dll is a Trojan.Vipgsm-K. mslogon.dll spreads via open network shares. mslogon.dll monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %System%\mstcpmon.exe %System%\chkdskw.exe %System%\itstore.dll %System%\karnal32.dll %System%\mslogon.dll %System%\mswshell.dll More info: http://www.sophos.com/virusinfo/analyses... Removal: Remove itstore.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.