Microcontrollers and their main protection measures
Posted on 25/05/2023, by
INCIBE (INCIBE)
The physical protection of ports at hardware level within embedded systems allows control of the physical access interfaces, but what happens when these interfaces are necessary? Sometimes, access via JTAG or UART to systems is required for maintenance or modifications in different industrial processes. Thanks to these accesses, suppliers can access memory addresses to read or write, modify firmware, etc. Given the importance of these tasks, it is necessary to incorporate cybersecurity into the process and it is precisely on these measures that the subject of this article will focus.Protection against fault injections, encryption of some memory sections within microcontrollers, or simple write protection are some of the defences that can be implemented to avoid problems within an industrial infrastructure
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