Summary

Distributed ledger technology (DLT) provides a technical mechanism for achieving verifiable trust through consensus and collective decision-making. DLT also involves maintaining ledgers in a decentralized way and using crypto-mechanisms that can deliver some intrinsic security features. However, a distributed ledger system still has security limitations, for example, confidentiality must be added depending on use case, data sensitivity and applicable data privacy regulations.

Recommendation ITU-T X.1401 provides a structured and systematic threat analysis method to design, implement and operate a distributed ledger technology system and to evaluate its security.