Continuous Certification of Non-repudiation in Cloud Storage Services

This paper presents a certification model for Non-repudiation (NR) of cloud storage services. NR, i.e., The possession of proofs that certain exchanges have taken place amongst interacting parties, is a significant security property for cloud data storage services. Our model for certifying NR is based on continuous monitoring and has been defined and realised according to the CUMULUS approach. It also corresponds to certification of level 3 maturity in the reference certification framework of Cloud Security Alliance.