District heating is a centralized thermal network that delivers hot water or steam from one or more plants to multiple buildings through insulated pipes. Instead of each building burning fuel on site, the network manages generation, pumping, metering, and temperature control across many connected endpoints. Modern systems may also include bidirectional substations, where buildings can return surplus heat to the grid.
In cyber security, district heating matters because it is operational technology: sensors, controllers, valves, and forecasting systems can affect real physical comfort and safety. If attackers falsify telemetry, delay measurements, or tamper with control logic, operators may misbalance supply and demand, waste energy, or trigger unsafe fallback behavior. Defenses focus on segmenting OT networks, validating data with plausibility checks, authenticating devices, and keeping conservative manual or automated fail-safe modes. In smart district networks, the forecast layer should inform operations, not replace physical controls.