Modern servers prefer ECDHE for forward secrecy, but many still accept RSA key exchange when an attacker manipulates the handshake. These domains are downgrade-attackable: a MITM forces RSA, harvested traffic from that session is decryptable with one stolen cert key. This finding is independent of quantum risk — it's a present-day exposure too.
| # | Domain | Score | Grade | Sector | Freshness |
|---|---|---|---|---|---|
| 1 | energy.gov | 6.1 | D | — | verified 5h ago |
| 2 | epirus.com | 6.0 | D | — | verified 5h ago |
| 3 | stripe.com | 6.0 | D | — | verified 3h ago |
| 4 | gm.com | 5.9 | C | — | verified 21h ago |
| 5 | treasury.gov | 5.9 | C | — | verified 5h ago |
| 6 | cedars-sinai.org | 5.9 | C | — | verified 5h ago |
| 7 | monday.com | 5.9 | C | — | verified 1h ago |
| 8 | audi.com | 5.8 | C | — | verified 29h ago |
| 9 | gitlab.com | 5.8 | C | — | verified 5h ago |
| 10 | volkswagen.com | 5.4 | C | — | verified 15h ago |
| 11 | uclahealth.org | 5.4 | C | — | verified 5h ago |
| 12 | politico.com | 5.4 | C | Global News & Media | stale (2d old) |
| 13 | netlify.com | 5.3 | C | — | verified 3h ago |
| 14 | amazon.com | 5.2 | C | — | verified 3h ago |
| 15 | houstonmethodist.org | 5.2 | C | — | verified 5h ago |
| 16 | alaska.com | 5.2 | C | — | verified 5h ago |
| 17 | hyundai.com | 5.0 | C | Global Automakers | verified 33h ago |
| 18 | reuters.com | 5.0 | C | Global News & Media | verified 9h ago |
| 19 | citi.com | 5.0 | C | — | verified 5h ago |
| 20 | usbank.com | 5.0 | C | — | verified 5h ago |
| 21 | fidelity.com | 5.0 | C | US Banking | verified 1h ago |
| 22 | santander.com | 5.0 | C | — | verified 5h ago |
| 23 | apnews.com | 4.9 | C | — | stale (32d old) |
| 24 | subaru.com | 4.9 | C | Global Automakers | verified 34h ago |
| 25 | uchicagomedicine.org | 4.9 | C | — | verified 5h ago |
Run the same scan we use for this ranking. See your specific findings, get the migration steps, and track the domain so you know when your score improves.