Summary

Distributed ledger technology (DLT) features include immutability, data sharing, decentralization, and tamper-resistance. Certain security services can benefit from the decentralized nodes of DLT to solve problems such as single point of failure, bottleneck performance and tampering.

Recommendation ITU-T X.1409 identifies aspects to be evaluated before delivering a security service based on DLT and provides examples to implement four security services which could be delivered based on DLT, namely:

������������ DLT-based public-key certificate management;

������������ DLT-based software defined perimeter;

������������ DLT-based threat intelligence sharing; and

������������ DLT-based security audit.