Electronic system and method for preventing malicious actions on a processing system of the electronic system

A method for preventing malicious actions on a processing system of a system on a chip, the processing system located on the chip and having a hardware processor and at least one additional unit, the system on the chip further having a secure enclave located on the chip and a protection system located on the chip, directly connected to the processing system, and external to the processing system, the method performed by said system on the chip, the method comprising:

• continuously monitoring and verifying, by the secure enclave, behavior of a software program run by the processing system to detect, by the secure enclave of the system on the chip, compromise of the processing system, and upon the detection of the compromise, triggering the protection system to perform at least one dedicated action on at least one of said at least one additional unit for applying countermeasures;
• performing, by the protection system of the system on the chip, via said direct connection, upon the triggering by the secure enclave, the at least one dedicated action on at least one of said at least one additional unit for applying the countermeasures by sending to a reset unit of said at least one additional unit a reset command triggering a reset of the processing system, or erasing an area of a memory of the processing system of the system on the chip.