F
Post-quantum TLS readiness
grserver.gr
Critical issue to fix first
Short answer
No. As of 2026-11-03, grserver.gr does not negotiate post-quantum key exchange; it uses x25519 over TLSv1.3 (Quantum Aether grade F), so recorded traffic is exposed to harvest-now-decrypt-later.
| Grade | F |
|---|---|
| Key exchange | x25519 |
| Post-quantum | no (classical) |
| TLS | TLSv1.3 |
| Hosting network | Combell NV |
| Tranco rank | #7264 |
| Country | 🇬🇷 Greece: #4/26 (63.3%) |
From our weekly tracker of the top 10,000 sites, scanned on 2026-11-03 · /adoption
Show your readiness on your site
Markdown
[](https://ather-quatum.cloud/?domain=grserver.gr)