Wi-fi has exploded across Britain this year, and is set to continue growing. The capability to improve mobile working means that wireless technology is allowing networked enterprises to tap into the true potential of their employees. But mobile users accessing the internet from corporate machines in Wi-fi hotspots are often doing so with little or no security controls in place. This could lead to network infection, which can have dramatic financial and operating consequences. With the average corporate enterprise infection costing an estimated £33,000 to repair, preventing infection at Wi-fi hotspots is a critical concern for many organisations.