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sistray.exe is installed alongside the hardware drivers for SIS video output devices, and offers additional configuration and diagnostic features. This program is a non-essential system process, but should not be terminated unless suspected to be causing problems.

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sisusbrg.exe is a patch from SiS which addresses a problem their range of USB controllers on Windows XP.

siteadv.exe is a process belonging to Site Advisor which protects your computer against Internet-bound threats from websites by classifying each with a safety rating. This program is important for the stable and secure running of your computer and should not be terminated.

sixtypopsix.exe is a process belonging to an advertising program by Network1. This process monitors your browsing habits and distributes the data back to the author's servers for analysis. This also prompts advertising popups. This process is a security risk and should be removed from your system.

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sk9910dm.exe is installed on mostly Gateway PCs, and allows configurations for the one-touch programmable keys on a gateway keyboard. This program is a non-essential system process, but should not be terminated unless suspected to be causing problems.

ska.exe Is a process which is registered as the Win32/Ska Virus. This Virus changes the WSock32.dll main library file in such a way so that it is attached to every piece of outgoing mail. This process is a security risk and should be removed from your system. Please see additional details regarding this process.

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skeys.exe is a process which belongs to the Microsoft Windows Operating System and provides the Serial Keys Utility. This program is a non-essential process, but should not be terminated unless suspected to be causing problems.

skinkers.exe is a process which belongs to the BBC News alerter utility by Skinkers Communications. This program is a non-essential process, but should not be terminated unless suspected to be causing problems.

sksdll.dll is a module which is registered as the Backdoor.Haxdoor.G Trojan. This Trojan allows attackers to use your computer as an Internet proxy server.

sksockserver.exe is a process registered as a backdoor vulnerability which may be installed for malicious purposes by an attacker allowing access to your computer from remote locations, stealing passwords, Internet banking and personal data. This process is a security risk and should be removed from your system.

skynetave.exe is a process which is registered as SASSER WORM. It takes advantage of the Windows LSASS vulnerability, which creates a buffer overflow and instigates your computer to shut down. To see more information about this vulnerability please look at the following Microsoft bulletin: http://www.microsoft.com/technet/security/bulletin/ms04-011.mspx This process is a security risk and should be removed from your system. Please see additional details regarding this process.

skype.exe is a process belonging to the Skype Internet Telephoney suite, which is used for computer-to-telephone based communications. This is a non-essential process. Disabling or enabling it is down to user preference.