Title: Basic aspects in redundancy-based intrusion tolerance
Authors: Felicita Di Giandomenico, Giulio Masetti (both ISTI-CNR Pisa)
Publication info: CISIS 2021 Conference http://2021.cisisconference.eu/
14th International Conference on Computational Intelligence in Security for Information Systems and 12th International Conference on European Transnational Educational (CISIS 2021 and ICEUTE 2021). CISIS – ICEUTE 2021. Advances in Intelligent Systems and Computing, vol 1400. 23 September 2021
This paper addresses intrusion tolerance in ICT systems (that is, how to guarantee the correct operation even when some of its parts are compromised), by adopting a redundancy approach. As an initial step to the process of incorporating redundancy features to enhance robustness of a system/subsystem to cyber attacks that end up with an intrusion, a conceptual framework encompassing the major aspects to be taken into account, regarding both system and redundancy characteristics, is proposed. This is the basis for reasoning on effective redundancy solutions, so a useful support for defining systems that need to satisfy resilience properties in hostile environments where threats include both intentional attacks and accidental faults.