Exploiting a lack of security checks in browsers and Web servers, Web worms and viruses are likely to become a major threat to surfers, security researchers speaking at the Black Hat Briefings warned on Thursday.

In separate presentations, researchers showed off techniques for using Javascript code on Web pages to grab browser histories and scan internal networks as well as using AJAX - a technology that adds interactive features to Web sites - to create Web viruses that can steal personal information.

Read the complete story here. (Security Focus)