Implications of Dissemination Strategies on the Security of Distributed Ledgers
This addresses security vulnerabilities in distributed ledger technologies for developers and researchers, but it is incremental as it builds on existing simulation studies.
The paper investigates how dissemination protocols and peer connection counts affect the resistance of distributed ledgers to Sybil attacks, where malicious nodes drop messages, finding that these factors influence security outcomes.
This paper describes a simulation study on security attacks over Distributed Ledger Technologies (DLTs). We specifically focus on attacks at the underlying peer-to-peer layer of these systems, that is in charge of disseminating messages containing data and transaction to be spread among all participants. In particular, we consider the Sybil attack, according to which a malicious node creates many Sybils that drop messages coming from a specific attacked node, or even all messages from honest nodes. Our study shows that the selection of the specific dissemination protocol, as well as the amount of connections each peer has, have an influence on the resistance to this attack.