COMMAND ORIGIN FILTERING

摘要

A communication and security device for a portable computer is disclosed including a housing, a connector provided on the housing for physical connection to the portable computer, a computer interface coupled to the connector for communicating data with the portable computer, a wireless modem coupled to the computer interface for communicating data between the portable computer and a remote device via a wireless network, a controller configured to control access to the data storage based on an identifier in a security message received via the wireless network.

主权项

1. A removable memory device comprising:
an interface for connecting the removable memory device to a host device; a data storage coupled to the interface; a wide area communication interface configured to receive a security message from a remote device, the security message comprising a user data header and message data including a security command; and a controller coupled to the wide area communication interface and to the data storage configured to determine whether the remote device is authorised based on an identifier carried by the user data header; wherein the controller is configured to control access to the data storage based on the security command in the event that the controller determines that the remote device is authorised.