Today Letsencrypt announced their plans for PQC migration and, oh boy, it's refreshing! TL;DR, Letsencrypt considers migration to quantum-resistant certificates a priority, and lays down a reasonable path to migrate. In so doing, they take the time to explain how, so far, the security community has been mainly focused on the problem of quantum-resistant secrecy (encryption) rather than authentication (signatures/certificates), and they explain why the sentiment is changing now, and why it is particularly relevant for Letsencrypt.
https://letsencrypt.org/2026/06/03/pq-certs
Not wanting to be the "told you so" guy, I've been saying this for at least 2 years now:
https://gagliardoni.net/#20260603_hndl
This is not to say that Harvest-Now-Decrypt-Later is a less urgent threat, but it's not as asymmetric as people have been believing so far. Glad to see things are changing!
#cryptography #crypto #security #quantum #pqc #postquantum #quantumsecurity #letsencrypt #ai