Threat writers, attracted by this ubiquitous access, have shifted malware attacks largely to the web, resulting in near-epidemic threat levels. Traditional defenses are proving to be inadequate against this rapidly changing web-based malware, leaving corporate networks exposed to the inherent danger posed by these threats and emphasizing the importance of a robust, secure platform to protect the enterprise network perimeter from such threats. Increasing mobility - largely enabled by web based applications - offers productivity benefits for businesses, as well as flexibility for users, by allowing users to work anywhere, anytime. However, this has also introduced significant security challenges, as organizations must find ways to extend security and policy enforcement to mobile users.The Cisco IronPort S-Series Web Security Appliance is the industry's first and only secure web gateway to combine acceptable-use-policy (AUP) controls, reputation filtering, malware filtering, data security, and application visibility and control on a single platform to address these growing risks. By combining innovative technologies, the Cisco IronPort S-Series helps organizations address the growing challenges of both securing and controlling web traffic whether their employees are tethered to a corporate LAN or sitting in an airport on their smartphones.