Distributed Control System (DCS).

An integrated ICS architecture in which controllers, operator stations, and engineering tools are distributed across a plant and tightly coupled by a vendor backbone. It belongs to the OT / ICS / IoT category of cybersecurity.

An integrated ICS architecture in which controllers, operator stations, and engineering tools are distributed across a plant and tightly coupled by a vendor backbone.

A Distributed Control System (DCS) is an integrated ICS architecture designed to control complex, continuous processes such as oil refining, petrochemicals, power generation, and pharmaceuticals. Multiple controllers are distributed across the plant and tightly coupled with operator stations, engineering workstations, asset management, and historians through a vendor-specific control network (Emerson DeltaV, Honeywell Experion, ABB 800xA, Yokogawa CENTUM). DCS platforms include sophisticated alarm management, redundancy, and batch capabilities that make ad-hoc patching difficult. Because DCS networks span the entire process and often integrate with safety systems, an intruder who reaches the DCS can manipulate set-points, suppress alarms, or stage attacks on adjacent safety controllers — as seen in TRITON.

Defences for Distributed Control System (DCS) typically combine technical controls and operational practices, as detailed in the full definition above.

Common alternative names include: DCS, Process control system.