AirStop is an endpoint security solution which prevents data leakage by controlling all communications adapters and storage devices on laptop and desktop computers. Controlled communications adapters include: LAN, WLAN, Cellular/3G, Bluetooth, Fax/Modem, Firewire. Controlled storage devices include: USB Flash Memory, CD / DVD RW Drive, Floppy Disk Drive. Designed for enterprise applications, the software enforces security policy by allowing a single communications adapter to be used during a given computing session. Once the Ethernet plug is removed, all adapters return to their previous states. Options for each device include Always ON, Always OFF and Controlled by AirStop. For example, the software automatically senses use of a wired Ethernet connection and automatically disables all other communciations and storage devices.