My home PC is pretty well protected but I don't have administrator priveleges for the desktop I use at work and so I can't add a spyware scanner. As I occasionally use my work PC for recreational browsing, I'd like to periodically clean it of spyware. It has Symantec Antivirus running network wide and a firewall, but I'm not confident it'll keep it clean from trivial spywares that just slow things down. Are there any browser based online spyware scanners that are legitimate and do anything? I'm paranoid to try any of the ones I found with a general web search as I've heard of scams that infect you rather than clean up. Thanks!