"In a Web 2.0 world, if you go to bbc.com, the banners and headlines are analysed by our solution before the files are downloaded to your site. On one page, there could be many links to a dozen other external domains," he said.

Hansmann said cyber criminals could create a fake company, and put up fake banner ads on a legitimate site. "Blue Coat will use 16 technologies and its database to verify legitimate companies with legitimate processes."

"A real-time version of Blue Coat's software is available for home use free, called K9, and is part of the company's community service," added Hansmann.