Exploring TrustZone-M on the NRF9160

I search for things I've written/published myself all the time. stuff really lives in the same place for more than a few months/years, and I forget where they were anyway, and often forget 90% of what's in it, so search is much faster at getting me there than trying to navigate the n+1th iteration of the website.

Adds TrustZone, but reduces isolation of LTE radio baseband attack surface?

> it breaks with the widespread concept of having one application microprocessor talking over serial line using AT commands with a separate cellular modem. Beside this it uses the latest ARM Cortex-M33 CPU core with new security features targeting especially secure IoT applications. The LTE modem is directly integrated into the SiP and communicating with the application processor using interprocessor communication based on shared memory.