Microprocessors embedded within a microprocessor which either facilitate remote access or impose closed source software.
- https://www.intel.com/content/www/us/en/support/articles/000097447/technologies.html
- https://web.archive.org/web/20250920141935/https://www.franksworld.com/2025/09/18/the-intel-backdoor-nobody-can-remove-not-even-you/
- https://consumerrights.wiki/w/AMD_Platform_Security_Processor
- https://hackaday.com/2021/10/01/flaw-in-amd-platform-security-processor-affects-millions-of-computers/