Several anti-virus manufacturers offer free online tools to check your system for viruses, spyware, etc.


Tools which both detect and remove problems:

    • Trend Micro - http://housecall.trendmicro.com

    • BitDefender - http://www.bitdefender.com/scan8/ie.html



Tools which detect problems (only):

    • Symantec - http://security.symantec.com/sscv6/

    • Kaspersky - http://www.kaspersky.com/kos/english/kavwebscan.html