Voltage override device for physical intrusion prevention on a data bus

A method for use in conjunction with a voltage override device for preventing physical intrusion on a data bus, the method comprising:

• collecting bus data for analysis;
• determining whether a transmission on the data bus is valid based at least in part on the collected bus data;
• sending an alert signal to the voltage override device when physical intrusion is detected on the data bus;
• initiating a bus override procedure in response to receipt of the alert signal by the voltage override device, whereby the voltage override device takes control of the data bus for a prescribed period of time;
• and
• releasing the data bus by the voltage override device once the prescribed period of time has elapsed.

A computer program product for preventing physical intrusion on a data bus, the computer program product including a non-transient computer readable storage medium having computer readable program code embodied thereon, the computer readable program code, when executed on at least one processor of a security appliance coupled to the data bus, causing the security appliance:

• to collect bus data for analysis;
• to determine whether physical intrusion has occurred on the data bus based at least in part on the collected bus data;
• to send an alert signal to a voltage override device when physical intrusion is detected on the data bus, the alert signal causing the voltage override device to initiate a bus override procedure, whereby the voltage override device takes control of the data bus for a prescribed period of time;
• and
• to cause the voltage override device to release the data bus once the prescribed period of time has elapsed.