PWM (Pulse Width Modulation) is a technique used in cybersecurity and electronics to control the amount of power delivered to devices by varying the width of electrical pulses in a signal. In cybersecurity contexts, PWM is often referenced when discussing hardware components, such as cooling fans or power supplies, where it enables precise control of speed or output without generating excess heat. By rapidly switching the power on and off, PWM allows for efficient energy management and can help prevent hardware overheating, which is crucial for maintaining system integrity and security. Understanding PWM is important for securing physical infrastructure and optimizing system performance.