One and Done Security
May 06, 2024
There is a lot of frustration by security experts and legislators, with device OEMs not implementing security measures. Apparently, many OEMs balk at the ongoing effort and expense to create and manage a security team to verify and fix problem reports and to communicate their actions according to the requirements of various security agencies. On their side, OEMs probably prefer a one and done approach to security. I think that I have a solution for this conflict. It is not a perfect solution, but it is a half-step in the right direction. The solution is partitioning. We have found that it is possible to achieve strong isolation between software partitions for the Arm Cortex-M architecture with memory protection units. It is possible to do this without excessive memory waste or processor overhead for both the v7M and v8M architectures. Tasks in on...
