US Patent 11178159 Cross-domain solution using network-connected hardware root-of-trust device

The concepts, systems and methods described herein are directed towards a security system. The system is provided to include a Hardware Root of Trust (HRoT) device comprising a processor and memory that is configured for connection and authentication to first and second host devices which are configured to communicate via a first communication channel having a first security level and a second communication channel having a second security level which is more secure than the first security level. The HRoT device is configured to: connect the first and second host devices via the second communication channel; and monitor the security of the first and second host devices over the second communication channel.