An approach for the design and placement of Intelligent Checkers (ICs) is presented along with an application to enhance the security and safety of a water purification system. Each IC, a smart sensor with a one-way outgoing communication over the network, monitors in real-time the status of one or more physical processes and raises an alarm when the monitored process measurements violate predefined constraints. ICs are structurally and behaviorally independent of the cyber-portion of a Cyber Physical System (CPS) and hence are much less likely to be affected by cyber attacks than the control system that monitors and controls a CPS. Thus, ICs serve as devices orthogonal to an existing intrusion detection system and assist in the early detection of successful attacks through independent monitoring of physical processes.
|Title of host publication||Proceedings - IEEE 38th Annual International Computers, Software and Applications Conference Workshops, COMPSACW 2014|
|Publication status||Published - 22 Sep 2014|
|Event||38th Annual International Computers, Software and Applications Conference Workshops - Vasteras, Sweden|
Duration: 21 Jul 2014 → 25 Jul 2014
|Conference||38th Annual International Computers, Software and Applications Conference Workshops|
|Period||21/07/14 → 25/07/14|