Dasient Web based Anti-Malware

Product: Web Anti-Malware (WAM)
Key features: Web security service designed to identify legitimate Web sites infected by malicious code. Uses Web crawlers and heuristics to automatically detect code that cyber-criminals have loaded onto legitimate Web sites in order to download malware or push visitors to fraudulent sites.
Price: Starts at $50 per month

Read more: Ex-Googlers behind new security service that flags malware on Web sites

text from http://www.cio.com/article/512791/10_Start_Ups_to_Watch_in_2010_A_Product_Roundup?page=3#slideshow