In every distributed system there is a need for a real-time database when working with a large amount of data and when quick response from a service is expected on the client side. Cloud companies do not offer real-time databases, therefore, in this paper we present the architecture of a realtime database in cloud environment, as well as reviews of other papers dealing with this topic, analyzing their advantages and disadvantages. The above-mentioned real-time database attempts to store different kind of data, and our proposed solution is implemented in each distributed system service. Unlike other solutions, this real-time database will not occupy main memory-base because it is running in cloud environment. Also, we are proposing which cloud environment services can be used to implement this real-time database. As an example, we are modeling one distributed system using Petri nets where solution can be applied.
The increasing threat landscape in Industrial Control Systems (ICS) brings
different risk profiles with comprehensive impacts on society and safety.
The complexity of cybersecurity risk assessment increases with a variety of
third-party software components that comprise a modern ICS supply chain. A
central issue in software supply chain security is the evaluation whether
the secure development lifecycle process (SDL) is being methodologically and
continuously practiced by all vendors. In this paper, we investigate the
possibility of using a decentralized, tamper-proof system that will provide
trustworthy visibility of the SDL metrics over a certain period, to any
authorized auditing party. Results of the research provide a model for
creating a blockchain-based approach that allows inclusion of auditors
through a consortium decision while responding to SDL use cases defined by
this paper. The resulting blockchain architecture successfully responded to
requirements mandated by the security management practice as defined by IEC
62443-4-1 standard.
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