The Internet Society is pleased to see the publication of RFC 8915: Network Time Security for the Network Time Protocol by the Internet Engineering Task Force (IETF). This standard represents a new security mechanism for one of the oldest protocols on the Internet, the Network Time Protocol (NTP).

https://www.internetsociety.org/blog/2020/10/nts-rfc-published-new-standard-to-ensure-secure-time-on-the-internet/ https://blog.cloudflare.com/nts-is-now-rfc/