Iframes and cross-site scripting can lead users to objects that aren't caught by signature or heuristics-based scans. IronPort has found a way to use its huge reputation database to prevent PCs from becoming bots or victims of malware attacks. In this session we'll explore zero-day blended threats, how behaviour and reputation can complement traditional signature scanning, and how you can prevent your users from picking up nasty infections as they surf the web. This session examines the extra risks posed by encryption, double flux and reputation theft. This session will also explain how IronPort's market-leading success in email security made it possible to improve web security. Finally, we'll describe how IronPort's email and web reputation technology is impacting other Cisco product families.