PALANTIR: An NFV-Based Security-as-a-Service Approach for Automating Threat Mitigation

Abstract

Small and medium enterprises are significantly hampered by cyber-threats as they have inherently limited skills and financial capacities to anticipate, prevent, and handle security incidents. The EU-funded PALANTIR project aims at facilitating the outsourcing of the security supervision to external providers to relieve SMEs/MEs from this burden. However, good practices for the operation of SME/ME assets involve avoiding their exposure to external parties, which requires a tightly defined and timely enforced security policy when resources span across the cloud continuum and need interactions. This paper proposes an innovative architecture extending Network Function Virtualisation to externalise and automate threat mitigation and remediation in cloud, edge, and on-premises environments. Our contributions include an ontology for the decision-making process, a Fault-and-Breach-Management-based remediation policy model, a framework conducting remediation actions, and a set of deployment models adapted to the constraints of cloud, edge, and on-premises environment(s). Finally, we also detail an implementation prototype of the framework serving as evaluation material.

Towards Smarter Security Orchestration and Automatic Response for CPS and IoT

“…The 14 existing SOAR approaches surveyed in Table I have mainly focused on a specific layer of systems such as IDS (papers [1], [10], [14]), network layer ([1], [7], [11], [12], [14]), or application layer ( [4], [3], [9]), or very specific mechanisms for resilience of CPS ( [5], [6], [11]). There is a lack of a systematic approach for SOAR for the multi-layered systems using IoT/CPS, computing continuum perspective.…”