Condensation is the phase change where vapor turns into liquid, releasing heat. In security contexts, that matters because moisture can collect inside enclosures, cable runs, sensors, and other electronics when warm air meets a cooler surface. Even a small amount of liquid can create shorts, increase corrosion, distort readings, or make a device behave unpredictably.
Cyber defenders pay attention to condensation in facilities, field hardware, and embedded systems because environmental faults can look like software bugs or intermittent tampering. Attackers may not need to “hack” a device directly if they can trigger humidity or temperature swings that destabilize equipment. Common protections include sealed housings, conformal coating, drainage, dehumidification, thermal control, and monitoring for dew-point risk. In short, condensation is a physical process that can become a cyber risk when it undermines availability, integrity, or reliable sensing.