Security solutions based on physical infrastructure, and policy expressed in terms of a particular device, the corporate PC, an IP address, network port, or application protocol are becoming useless in a mobile, borderless world.

FORBES: Going Mobile: Security in the Age of Ubiquity

And the move to mobile devices will be a new battleground in the enterprise network: Avaya and Cisco are both launching IP phone tablets.

FORBES: Cisco Business-ifies The Bluetooth Headset