An industrial control system (ICS)
Industrial control systems (ICS) are
Industrial control system (ICS) is a general term that encompasses several types of control systems, including supervisory control and data acquisition (SCADA) systems, distributed control systems (DCS), and other smaller control system configurations. ICS are critical to the operation of the U.S. critical infrastructures that are often highly interconnected and mutually dependent systems.
Many of today's ICS evolved from the insertion of IT capabilities into existing physical systems, often replacing or supplementing physical control mechanisms. For example, embedded digital controls replaced analog mechanical controls in rotating machines and engines. Improvements in cost-performance have encouraged this evolution; resulting in many of today's "smart" technologies such as smart transportation, smart buildings, and smart manufacturing. While this increases the connectivity and criticality of these systems, it also creates a greater need for their adaptability, resiliency, safety, and security. The introduction of IT capabilities to promote corporate connectivity and remote access into physical systems presents emergent behavior that has security implications.
ICS now use many standard IT protocols, such as TCP/IP networking, HTTP, File Transfer Protocol (FTP), and Extensible Markup Language (XML).
- ↑ NIST Special Publication 800-53, App. B, Glossary.
- ↑ Roadmap to Secure Control Systems in the Water Sector, at 11.
- ↑ NIST Special Publication 800-82, Revision 2.
- ↑ Maritime Critical Infrastructure Protection: DHS Needs to Better Address Port Cybersecurity, at 4 n.7.
- ↑ DHS Can Make Improvements to Secure Industrial Control Systems, at 2.
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