The Supervisory Control and Data Acquisition (SCADA) system has prominent place and play important roles within real time industrial communication included "electric stations, oil stations and water purification plants". In this study; the SCADA System main components, architecture and important protocols, which have been used in SCADA message transmission are reviewed. After review, the current research changes the direction (Section: Future Work) to the security of SCADA system and the existing methods or security methods that have been deployed within the SCADA system. This review also gives directions to secure SCADA network communication.

Now days cloud computing is an important and hot topic in arena of information technology and computer system. Several companies and educational institutes have been deployed cloud infrastructures to overcome their problems such as easy data access, software updates with minimal cost, large or unlimited storage, efficient cost factor, backup storage and disaster recovery and several other benefits compare with the traditional network infrastructures. In this research paper; Supervisory Control and Data Acquisition (SCADA) system has been deployed within cloud computing environment, to minimized the cost (that are related with real time infrastructure or SCADA implementation) and take the advantages of cloud computing. The command bytes (data) have been transmitted between SCADA nodes and traffic is monitored and controlled simultaneously at master (main controller) site. During communication, security is a major issue because usually, SCADA system and cloud infrastructure had been deployed without any security consideration. In current testbed implementation, strong security mechanism (using cryptography solution) has been deployed, while exchanging commands within cloud environment (SCADA within cloud environment). Several times attacks included "authentication, integrity, confidentiality and non-repudiation" have been lunched, to evaluate the security solution (proposed security solution) and security during abnormal communication.

With the inclusion of tactile Internet (TI) in the industrial sector, we are at the doorstep of the tactile Industrial Internet of Things (IIoT). This provides the ability for the human operator to control and manipulate remote industrial environments in real-time. The TI use cases in IIoT demand a communication network, including ultra-low latency, ultra-high reliability, availability, and security. Additionally, the lack of the tactile IIoT testbed has made it more severe to investigate and improve the quality of services (QoS) for tactile IIoT applications. In this work, we propose a virtual testbed called IoTactileSim, that offers implementation, investigation, and management for QoS provisioning in tactile IIoT services. IoTactileSim utilizes a network emulator Mininet and robotic simulator CoppeliaSim to perform real-time haptic teleoperations in virtual and physical environments. It provides the real-time monitoring of the implemented technology parametric values, network impairments (delay, packet loss), and data flow between operator (master domain) and teleoperator (slave domain). Finally, we investigate the results of two tactile IIoT environments to prove the potential of the proposed IoTactileSim testbed.

Industrial Control System (ICS) has been designed for critical infrastructure sectors and 90% of these systems are property/owaned and operated by private organizations. Industrial Control System (ICS) were designed to fulfill the basic requirements included system performance and reliability and other basic needs, related with real time transmission, without interlinking with networks (public/private) or/and internet connectivity. In this research, detail review has been conducted which is based on Industrial control system or ICS types and their uses and/or importance within industries or real time industries. The remaining sections highlighted the potential problems or issues which are linked with these systems during communication and detail problem statement has been also conducted and several existing security deployments are reviewed, to find the generic security mechanism that will secure the communication of critical infrastructures.

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