https://devzone.nordicsemi.com/f/nordic-q-a/84242/cybersecurity-by-hardwareThis question relates to the unsatisfying reponse to ticket 283390. The technology of the processor is not important. Arm Cortex processors are as fine as several others. The important point is this: Processor and memory need to be separate in orderen-USTelligent Community 13Mon, 31 Jan 2022 14:58:01 GMThttps://devzone.nordicsemi.com/thread/350476?ContentTypeID=1Mon, 31 Jan 2022 14:58:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:72603c2a-a4c7-4fb2-a1ce-5461c09d418cketiljo<p>All Nordic devices have the memory, RAM and flash, built in and there is no access to the memory bus from the outside of the device. So I&#39;m afraid you have to go elsewhere to get what you need. I think you will find most small MCU&#39;s to have this so maybe look for a larger CPU where the memory bus is external.&nbsp;</p><div style="clear:both;"></div>