Supervisory Control and Data Acquisition (SCADA)

Supervisory Control and Data Acquisition (SCADA) is a control system used to monitor and control industrial processes and critical infrastructure.

SCADA systems collect real-time data from sensors, instruments, and other devices distributed across large geographical areas, then transmit this information to a central control room where operators can monitor operations and issue commands to remote equipment.

These systems are fundamental to the operation of power grids, water treatment facilities, oil and gas pipelines, manufacturing plants, and other critical infrastructure. A typical SCADA system consists of human-machine interfaces (HMIs), remote terminal units (RTUs), programmable logic controllers (PLCs), and communication networks that connect these components.

SCADA systems present significant cybersecurity challenges because they were originally designed for reliability and functionality rather than security, often operating on legacy systems with limited security features. Many SCADA networks were historically isolated from corporate networks and the internet, but increasing connectivity for remote monitoring and efficiency improvements has expanded their attack surface.

Successful cyberattacks against SCADA systems can have devastating consequences, potentially causing power outages, environmental disasters, or disruption of essential services. Notable examples include the Stuxnet attack on Iranian nuclear facilities and various attacks on power grids, highlighting the critical importance of securing these industrial control systems.