BAE STOP 8.8.2 completed Common Criteria security evaluation in September 2023. [0] The evaluated configuration was a BAE XTS-752 machine which uses an Intel Xe

BAE STOP 8.8.2 completed Common Criteria security evaluation in September 2023. [0] The evaluated configuration was a BAE XTS-752 machine which uses an Intel Xeon Gold 6256 CPU (Cascade Lake, released 2020, 12 cores), although the evaluation says that the STOP operating system is supported on any "x86 CPU(s) supporting the x86_64 instruction set and features (Intel™ Core™, Intel Xeon or AMD™ x86_64)" Unisys MCP now runs on Azure, so it would run on whatever Azure uses. I think both work on commodity x86-64 server hardware; in BAE STOP's case, you need to use the exact hardware in the security evaluation for that evaluation to fully apply; otherwise, you may need to do further analysis and get approval to deviate from it, depending on the policies of the client organisation. Unisys MCP lacks Common Criteria evaluation (unlike say Red Hat Enterprise Linux), so even if you believe it is more secure than mainstream alternatives, there is no evidence any third party has done any security evaluation to confirm that. (Maybe some really old version did receive a security evaluation, but that has limited relevance to current ones.) [0] https://www.commoncriteriaportal.org/nfs/ccpfiles/files/epfiles/553-EWA%20ST%20v0.24.pdf https://www.commoncriteriaportal.org/nfs/ccpfiles/files/epfi...