在「Google Chrome's new post-quantum cryptography may break TLS connections」這邊看到的，出自「Q1 2024 Summary from Chrome Security」這邊的公告。
Chrome 124 預設啟用 X25519Kyber768 了：
After several months of experimentation for compatibility and performance impacts, we’re launching a hybrid postquantum TLS key exchange to desktop platforms in Chrome 124. This protects users’ traffic from so-called “store now decrypt later” attacks, in which a future quantum computer could decrypt encrypted traffic recorded today.
如果遇到問題的話可以在 chrome://flags 裡面的 #enable-tls13-kyber 關閉後重開瀏覽器... 不過應該是還好，大多數的 HTTPS server 應該都沒有實作 X25519Kyber768，就算是 Cloudflare 應該預設也是關的。