The basic idea behind delegation is that some active entity in a system
With the exponential growth in the number of vital infrastructures such as nuclear plants and transport and distribution networks, these systems have become more susceptible to coordinated cyberattacks. One of the effective approaches used to strengthen the security of these infrastructures is the use of unmanned aerial vehicles (UAVs) for surveillance and data collection. However, UAVs themselves are prone to attacks on their collected sensor data. Recently, blockchain (BC) has been proposed as a revolutionary technology that can be integrated within Internet of things (IoT) to provide a desired level of security and privacy. However, the integration of BC within IoT networks, where UAV's sensors constitute a major component, is extremely challenging. The major contribution of this study is twofold:(1) survey the security issues for UAV's collected sensor data, define the security requirements for such systems, and identify ways to address them; and (2) propose a novel BC-based solution to ensure the security of and the trust between the UAVs and their relevant ground control stations.Our implementation results and analysis show that using UAVs as means for protecting critical infrastructure is greatly enhanced through the utilization of trusted BC-based unmanned aerial systems. INTRODUCTIONFlying ad hoc networks (FANETs) are one of the self-organized networks in which mobile nodes are called unmanned aerial vehicles (UAVs). In addition to the flying UAVs, the overall system involves also ground control stations (GCSs) and sometimes satellites. 1 Various innovative applications in different domains have emerged with the development of FANETs including agriculture, crowd sensing, frontiers surveillance, and search and rescue operations. 2,3 , to name a few.To ensure this variety of applications, commercial drones (UAVs) are equipped with different sensors and cameras. 4 After gathering the sensed or captured data, a UAV, which can be sometimes remotely controlled, sends the data to the GCS for further processing. At the same time, flying UAVs can also communicate with each other for data delivery, positioning, accuracy, or even for collision avoidance.Wireless communication devices, sensors and UAVs, are usually energy-restricted devices with low computational power systems and thus cannot run complex cryptography procedures to protect communicated data from possible malicious attacking entities. Thus, efficient security solutions should be developed to overcome this shortcoming, especially for the case of UAVs monitoring of critical infrastructures. 5 Several solutions have already been proposed in the literature based on both cryptography 6 and trust management. 7 However, ensuring the desired Trans Emerging
BackgroundTrauma is a major health problem in the United Arab Emirates (UAE) as well as worldwide. Trauma registries provide large longitudinal databases for analysis and policy improvement. We aim in this paper to report on the development and evolution of a national trauma registry using a staged approach by developing a single-center registry, a two-center registry, and then a multi-center registry. The three registries were established by developing suitable data collection forms, databases, and interfaces to these databases. The first two registries collected data for a finite period of time and the third is underway. The steps taken to establish these registries depend on whether the registry is intended as a single-center or multi-center registry.FindingsSeveral issues arose and were resolved during the development of these registries such as the relational design of the database, whether to use a standalone database management system or a web-based system, and the usability and security of the system. The inclusion of preventive medicine data elements is important in a trauma registry and the focus on road traffic collision data elements is essential in a country such as the UAE. The first two registries provided valuable data which has been analyzed and published.ConclusionsThe main factors leading to the successful establishment of a multi-center trauma registry are the development of a concise data entry form, development of a user-friendly secure web-based database system, the availability of a computer and Internet connection in each data collection center, funded data entry personnel well trained in extracting medical data from the medical record and entering it into the computer, and experienced personnel in trauma injuries and data analysis to continuously maintain and analyze the registry.
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