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The learning objective of this module is for trainees to gain comprehensive, hands-on experience on how to conduct an optical probing attack against a logic locking scheme. This module provides a basic understanding of the laser assisted optical attacks using both ASIC and FPGA platforms. Trainees will learn how to extract security-critical information, like a locking key, from hardware systems that incorporate logic locking circuitry. By doing so, the locking scheme is essentially rendered useless, as its defensiveness is based on the key remaining secure. This module makes use of Electro-Optical Probing (EOP) for time-domain analysis and Electro-Optical Frequency Mapping (EOFM) for frequency-domain analysis, both of which can be utilized on the PHEMOS-1000 machine in the FICS lab.