Enterprises that use MDM (mobile device management) systems to protect their corporate data on employees' mobile phones are not safe from attacks from spyphones, researchers warned at BlackHat Europe on Thursday. Over the next five years, 65 percent of enterprises will adopt an MDM system for corporate users, technology research company Gartner predicted last October. Companies will use the systems to manage network traffic and corporate data on smartphones and tablets, which nowadays are often owned by employees and used for both private and corporate tasks.