دانلود کتاب امنیت و انعطاف پذیری سیستم های فیزیکی سایبری

Cyber-physical systems enable interoperability of cyber and physical worlds through control, computation, and communications. Control, optimization, monitoring, and diagnostic schemes that operate cyber-physical systems (e.g., power generation, transportation, oil & gas, computing and communication systems, healthcare systems, etc.) are increasingly connected via local networks or the Internet. As a result, these control systems have been increasingly vulnerable to threats and jamming, such as cyber-attacks (e.g., associated with a computer virus, malicious software, etc.), that could disrupt their operation, damage equipment, inflict malfunctions, etc. Many of current cybersecurity methods primarily consider attack detection and mitigation in Information Technology (“IT”, such as, computers that store, retrieve, transmit, manipulate data) and OperationalTechnology (“OT”, such as direct monitoring devices and communication bus interfaces) at the network and communication layers. Cyber-attacks can still penetrate through these protection layers and reach the physical “domain” as seen in 2010 with the Stuxnet attack. Such attacks can negatively affect the performance of a control system and may cause total shut down or catastrophic damage to the system. Currently, fewer methods are available to automatically detect, during a cyber-incident, attacks at the physical domain layer (i.e. the process level) where sensors, controllers, and actuators are located. In some cases,multiple attacks may occur simultaneously (e.g., more than one actuator, sensor, or parameter inside control system devices might be altered maliciously by an unauthorized party at the same time). Furthermore, some subtle consequences of cyber-attacks, such as stealthy attacks occurring at the physical layer, might not be readily detectable (e.g.,when only one monitoring node, such as a sensor node, is used in a detection algorithm).