XLGuarder is a rogue antispyware. The program uses scare tactics (such as pop-ups and fake system notifications), infects systems via misleading advertising on free download, warez and porn websites, trojans and browser security holes. XLGuarder put popups looks like a Microsoft Security Center screen. HijackThis shows infections: O2 – BHO: (no name) – {D032570A-5F63-4812-A094-87D007C23012} –