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Department of Informatics - Communication Systems Group

BloSS - The Full View and Evaluation

The Communication Systems Group CSG, Department of Informatics IfI, at the University of Zurich UZH recently published a full fledged view on the blockchain-based collaborative defense system, BloSS, and its major results.

The paper available in Springer's Journal of Network and Systems Management outlines that in BloSS members of a collaborative defense perform the on-chain signaling of DDoS (Distributed Denial-of-Service) attack information, establishing bilateral contracts defining the terms of a mitigation service. BloSS stimulates the cooperative behavior in the collaborative defense environment by providing valuable incentives defined in terms of the mitigation service contract and combining it with a reputation system in its protocol for the bilateral evaluation of the service.

The challenge between transparency and data confidentiality is addressed on the BloSS platform with a hybrid approach, combining the declaration of on-chain metadata and the transmission of encrypted and signed off-chain data, so that it is possible to strike a balance in this trade-off. In this way, BloSS establishes a new cooperative approach so that the defense of large-scale DDoS attacks is as widely distributed as the attack itself.

Further technical information are accessible at the CSG's research pages.

Bruno Rodrigues