A Programmable Logic Controller (PLC) is a ruggedized digital computer used to automate industrial processes, such as assembly lines, robotic devices, or any activity that requires high reliability and ease of programming. PLCs monitor inputs, make decisions based on their programmed logic, and control outputs to automate machinery or processes. In cybersecurity, PLCs are critical assets, as their compromise can lead to physical damage, production downtime, or safety hazards. Securing PLCs involves network segmentation, regular firmware updates, and strict access controls to prevent unauthorized manipulation or cyberattacks targeting industrial environments.