spywareknight is a rogue anti-spyware program installed onto your computer by some trojan. It may give exaggerated reports of threats on the computer and then prompts the user to purchase a registered version of the software in order to remove the reported threats.
SpyNoMore can automatically remove the Trojan. Even if you remove it manually, we recommend you should use SpyNoMore to make sure it's completely removed from your system and will not be reinstalled by itself.
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Removal Instructions for Emerging Adware & Spyware