FBI’s Secret Surveillance Tech Budget Is ‘Hundreds of Millions’
theintercept.com
theintercept.com
https://en.wikipedia.org/wiki/Secure_Trusted_Operating_Progr...
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.133...
However, XTS-400's are usually operated in console mode as cross-domain solutions. These are like ultra-thorough firewalls with content scanning, assurance that OS resists hackers, and various covert/side channels plugged. Guards actually predate firewalls: a knockoff of guards that had less features and always (even today) less assurance of secure implementation. Defense sector still prefers guards on points where multiple levels, esp Internet and classified, connect. Although, even most guards are at weak EAL4 OS's now. (sighs)
Why do you think zuckerberg tapes the camera on his laptop ?
As a joke. Same goes for the tape on his mic.