Abstract:
CPS are hybrid systems that integrates physical processes, computational
resources and communication capabilities to monitor and control a physical process. In simple terms cyberphysical systems are real world systems
controlled by computers. Examples of CPS are power grid network, water
distribution systems, transportation systems and other critical infrastructure. Integration of cybertechnology and physical processes increases system
efficiency but at the same time introduces threats such as cyberphysical attacks to the systems. These attacks disrupt the normal behavior of physical
processes and can cause catastrophic damages.Traditional detection techniques used by critical infrastructure systems cannot be used to detect such
cyberphysical attacks because these attacks are designed in a way that can
bypass current detection techniques undetected.One such attack is the zero
dynamics attack(ZDA).
A ZDA is an attack on the internal dynamics of network control systems
(NCS) that causes serious damages. Such attacks cannot be detected through
the system input or output. Thus, to better understand and prevent NCS
from ZDA the thesis has two parts:
