Induced current caused by light, laser beam, heavy ion irradiation, etc. can disrupt proper functioning of the device. Thus, performing optical injection can help the adversary to retrieve and/or modify the sensitive data stored in the attacked chip. Though the techniques have existed for some time, in recent years, fault injection (FI) has emerged as an increasingly more common and accessible method of exploitation. Typically requiring physical access, an attacker can momentarily tamper with a processor's electrical inputs (e., voltage or. Practical Optical Fault Injection on Secure Microcontrollers In this paper, we detail the latest developments regarding optical fault injection on secure microcontrollers. Such attacks are practical; they do not even require expensive laser equipment. Nowadays many manufactures apply countermeasures against fault attacks, but adversaries invent and introduce new sophisticated approaches every year to bypass these countermeasures.
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