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Abstract

In the Internet of Things (IoT) heterogeneous technologies concur to the provisioning of customized services able to bridge the gap between the physical and digital realms. Security, privacy and data quality are acknowledged to represent key issues to be tackled in order to foster the large-scale adoption of IoT systems and technologies. One instrumental aspect concerns the ability of the system to preserve security in the presence of external attacks. In such a scenario, the integration of a flexible IoT middleware, able to handle a large number of data streams and of interconnected devices, with a flexible policy enforcement framework is needed and presented in this paper. The proposed solution aims to ease the management of interactions across different realms and policy conflicts. Its effectiveness is validated by means of a lightweight and cross-domain prototypical implementation.

7. Conclusions

Security and data quality issues represent potential showstoppers for the market take-up of IoT-based products and services in various operational scenarios and vertical application domains. To tackle these issues, in this elsarticle we have introduced and discussed a flexible security and data quality enforcement framework, coherently integrated within a distributed IoT middleware platform. The presented framework supports security and data quality enforcement policies, re-usable across different domains and able to detect violation attempts. The feasibility and performance of the proposed approach have been validated by means of a prototypical implementation and the development of a simple, yet real-world, use case. In the next future we will focus on the deployment of the middleware and the framework in a large-scale pilot focussed on building automation, in order to test its robustness and scalability in operational environment.