Visible to the public Sensor Security Index for Control Systems

TitleSensor Security Index for Control Systems
Publication TypeConference Paper
Year of Publication2017
AuthorsJeon, H., Eun, Y.
Conference Name2017 17th International Conference on Control, Automation and Systems (ICCAS)
Date Publishedoct
Keywordsactuator security, actuators, anomaly detector, composability, Control systems attack, Cyber-physical attack, Detectors, Gold, Human Behavior, Indexes, linear control systems, linear dynamic systems, Linear systems, malicious attacks, Metrics, multiple sensors, north eastern electrical grid black out, pubcrawl, resilience, Resiliency, security, security of data, Sensor attack, sensor attacks, sensor bias injection attacks, sensor security index, Sensors, Steady-state, Stuxnet, system destruction, system vulnerability
Abstract

Security of control systems have become a new and important field of research since malicious attacks on control systems indeed occurred including Stuxnet in 2011 and north eastern electrical grid black out in 2003. Attacks on sensors and/or actuators of control systems cause malfunction, instability, and even system destruction. The impact of attack may differ by which instrumentation (sensors and/or actuators) is being attacked. In particular, for control systems with multiple sensors, attack on each sensor may have different impact, i.e., attack on some sensors leads to a greater damage to the system than those for other sensors. To investigate this, we consider sensor bias injection attacks in linear control systems equipped with anomaly detector, and quantify the maximum impact of attack on sensors while the attack remains undetected. Then, we introduce a notion of sensor security index for linear dynamic systems to quantify the vulnerability under sensor attacks. Method of reducing system vulnerability is also discussed using the notion of sensor security index.

URLhttp://ieeexplore.ieee.org/document/8204432/
DOI10.23919/ICCAS.2017.8204432
Citation Keyjeon_sensor_2017