10 Free Online Malware and Virus Scanners

Travis Quinnelly 15-01-2008

Occasionally I find myself working on a computer that has some problems. Maybe its malware, maybe its viruses, either way…it mucking up the PC and just generally slowing things down. Has this ever happened to you? If you’ve surfed the Internet for very long, you’ve probably experienced this and/or you’re prone to getting something downloaded and installed without your consent.


During these times I would normally use the trusty SpyBot – Search & Destroy application because it’s superior in many ways, but if I don’t have it with me or feel like just doing a quick online check without having to install a client application, the few choices below provide a good alternative.

BitDefender – Easy on-demand virus scanner using powerful BitDefender engines. It scans system memory, files and drive boot sectors. It also automagically cleans infected files. Uses ActiveX components (IE Only)

CA – Online virus scanner. Just agree to a little ActiveX component and you’re scanning with ease in just a brief moment. Uses ActiveX components (IE Only)

CA - Online Virus Scanner

ESET – Online malware scanner. With just an acceptance of ESET’s TOS, you can scan your PC for known malware including viruses, worms, Trojans, phishing, and spyware.

ewido – Simple cleaner for malware. Uses ActiveX components (IE Only)


F-Secure – Simple virus scan from web. Uses ActiveX components (IE Only)

Jotti – Simple file checker. Jotti uses several scanners to look into the file you upload to determine if it’s infected.

McAfee FreeScan – McAfee FreeScan is a great virus scanner using the award-winning McAfee Scan Engine. Uses ActiveX components (IE Only)

NanoScan – Great, fast scanning application previously covered by the MUO Directory.

NanoScan - Fastest Online Virus Scanner

Panda ActiveScan – Get a free Panda scan that checks for viruses, spyware and other various internet threats. Current count over 185,000 viruses, worms, and trojans. Uses ActiveX components (IE Only)

TrendMicro – Scans for Viruses and Malware. It also scans for vulnerabilities and and fixes them to prevent re-infestation.

Related topics: Anti-Malware, Internet Explorer, Spyware.

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  1. Praqveen
    December 23, 2009 at 6:19 pm

    6 Different Techniques used by malware composers
    [Broken Link Removed]

  2. Malware
    October 16, 2009 at 10:53 am

    Online scanners and cleaners keep my PC running quickly and efficiently. Otherwise, more complex antivirus software would keep my computer running slowly. CPU speed, disk speed, and booting speed are significantly reduced by the use of antivirus software. That is why these online programs are so important.

  3. dave
    September 15, 2009 at 1:21 pm

    In two weeks of live tests, Microsoft's browser caught socially engineered malware 81 percent of the time.

  4. sbw07
    February 12, 2008 at 5:42 am

    It would be great if you would say which ones are Vista - compatible. This goes for applications that you mention as well.

  5. Syahid A.
    January 26, 2008 at 6:47 am

    Essential! I've heard good words on nanoscan. Can't wait to try the rest.

  6. vhxn
    January 17, 2008 at 10:34 am

    Quite interesting post because these helps in throwing out the unwanted malwares and viruses out.