Intel ME running Minix is in the news again…
An Open Letter to Intel
[…]I knew that Intel had some potential interest in MINIX 3 several years ago when one of your engineering teams contacted me about some secret internal project and asked a large number of technical questions about MINIX 3, which I was happy to answer. I got another clue when your engineers began asking me to make a number of changes to MINIX 3, for example, making the memory footprint smaller and adding #ifdefs around pieces of code so they could be statically disabled by setting flags in the main configuration file.[…]
Yours truly,
Andrew S. Tanenbaum
http://www.cs.vu.nl/~ast/intel/
https://en.wikipedia.org/wiki/Andrew_S._Tanenbaum
Firmware Security 
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