Qualys has introduced a free service that scans Web sites for malware.

"As part of the service, QualysGuard Malware Detection crawls the pages of customer sites and looks for invisible iFrames, malicious JavaScript code, and other indications of a stealth threat to visitors and provides automated alerts and reports to Web site owners," writes CNET News' Elinor Mills.

"The company has profiled Internet Explorer 6 and Adobe's Acrobat, Reader, and Flash Player to understand exactly what happens under normal conditions so it can quickly detect deviations that occur when malware is present, said Wolfgang Kandek, chief technology officer at Qualys," Mills writes.

Click here to read the CNET News article.