- What is SCADA?
- What comprises a SCADA system?
- Where are SCADA systems used?
- Why the sudden concern about SCADA systems?
Q: What is SCADA?
A: SCADA stands for Supervisory Control and Data Acquisition.
SCADA systems are used in utility infrastructures as a
computer-based monitoring and control system that centrally
collects, displays, and stores information from remotely-located
data collection transducers and sensors to support the control
of equipment, devices, and automated functions.
Q: What comprises a SCADA system?
A: All hardware and software elements associated with the control
and monitoring of a system, including GUIs, databases, sensors,
relays, switches, remote telemetry units (RTU), networks,
Q: Where are SCADA systems used?
A: They are used in various applications requiring real-time and
near real-time process control, e.g. electric power, oil and gas
pipelines, water treatment and distribution, and chemical processing.
Q: Why the sudden concern about SCADA systems?
A: Concerns are based on:
- Greater awareness of critical infrastructure issues.
- Studies and assessments have found a lack of security in SCADA
- More reliance on Internet and COTS software bring in new
- Increased and validated threat (terrorist, extremists, activists).