Industrial Cybersecurity

Resiliency and redundancy

As stated previously, the the context of ICS security, the CIA triad that stands for confidentiality, integrity, and availability for regular IT systems should be interpreted in the opposite order for ICS or OT systems. Availability is of much more importance, or better said, is a larger budget determinant than confidentiality or integrity. A large contributor to availability in a network is resiliency and redundancy. The terms "resiliency" and "redundancy" are often confused. The simple fact is that you can't have one without the other and both are critical to designing and deploying a highly available network solution. Redundancy means having more than one of something, such as having a backup firewall or an alternate ...