CWA 17356:2018

This CWA will provide guidance on aspects of the information exchange requirements between entities in widezone surveillance systems used in critical infrastructures. These entities can comprise human actors and system components. In particular, the CWA focuses on the services, data and metadata that need to be exchanged.
Given the distributed nature of widezone surveillance systems, the CWA gives guidance and offers guidelines on the architecture in order to address any processing and communication performance limitations. The CWA introduces the concepts of security capillaries and clusters that can enhance the overall system’s performance, interoperability, scalability and ease of deployment and use.
The CWA covers the security requirements regarding the interaction of physical and cyber-threats in a widezone surveillance system, both in terms of data communication and storage, as well as the protection of the sensing units themselves. The CWA also covers representation of the surveillance information to the different stakeholders, although the emphasis is not on human computer interaction (HCI).
The CWA offers recommendations on the type of information exchanged, the use of data models for exchanging sensor observations, the use of metadata models for describing the measurement process, the means to validate the conformance of information exchanged to the models selected. It provides references to industry standard protocols which describe implementation aspects like the OGC's Sensor Web Enablement (SWE) industry standards for sensor data representation and discovery. However, it does not cover implementation details of the exact communication protocols, data models, data structures used, or specific schemas for the description of message interfaces, the syntax of the exchange or the file formatting required for the exchange. The CWA also does not cover simulation and training processes for security personnel.
The CWA is for use by organizations responsible for designing, configuring, operating and maintaining wide area security systems. It is also of use to those organizations manufacturing components for the surveillance market that will interoperate with modern or/and legacy surveillance platforms.
The CWA is also of interest in the procurement of surveillance systems that combine best-of-breed technological solutions from several vendors. It is also of interest to risk assessment analysts and to public authorities involved in dealing with the protection of widezones.