What exactly this criterion covers
This criterion is discreet… until it blocks SEO performance.
**SEC2 — TLS 1.2 minimum** (Chapter 13 - Security): Up-to-date security protocol, disable TLS 1.0/1.1
SEC2 — Chapter 13 - Sécurité
Criterion SEC2 : TLS 1.2 minimum — guide + checklist
This criterion is discreet… until it blocks SEO performance.
The **SEC2 — TLS 1.2 minimum** criterion is part of our SEO checklist (335 criteria). Here, you have a **practical** method to check and fix it — with a concrete example.
Why it matters (SEO + UX)
Why it matters: it is a UX point that eventually translates into SEO. When poorly applied, we often observe: ambiguity (wrong associated query), duplication between pages, or performance loss on rankings.
On high-volume generated sites, this criterion also acts as a **safeguard**: a stable rule prevents 1,000 errors at once.
How to check (step by step)
Approach: browser-side control (render + code). Recommended tool: **SSL Labs**.
- Open the source code and locate the concerned element (tag/structure).
- Check hierarchy and coherence with H1 + intro.
- Run a crawl to detect pages violating the criterion.
Tip: first isolate 10 “representative” URLs (top pages + generated pages) before scaling the fix.
How to fix properly
Strategy: fix + add a safeguard for mass import.
- Verify HTTPS + clean redirects.
- Add basic headers (HSTS, reasonable CSP) according to your stack.
- Retest after deployment.
Then: re-crawl 50–200 URLs, then monitor Search Console for 7–14 days (impressions/CTR/indexing).
Concrete example (illustrative)
Example (illustrative):
- **Context**: service landing page for online courses in Marseille
- **Before**: HTTPS OK but headers missing (CSP/HSTS).
- **After**: Added HSTS + reasonable CSP + secure cookies (if applicable).
- **Note**: Goal: reduce risks and improve browser trust.
Checklist to tick
- [ ] HTTPS everywhere
- [ ] Respects: disable TLS 1.0
- [ ] Clean redirects
- [ ] Basic headers tested
- [ ] No mixed content
FAQ
Frequently asked questions — SEC2
What is the most common mistake on “TLS 1.2 minimum”?
Applying an overly generic automatic pattern (same logic on all pages) without adding a differentiating element.
Which tool is fastest for large-scale checking?
For this type of criterion, a crawl (e.g., Screaming Frog) plus targeted verification in SSL Labs is generally the fastest combo.
How to prevent recurrence on 10K generated pages?
Freeze an auto-generation rule (title/structure/schema/URLs) plus add automatic control (crawl or test) before production import.
Ready to go from theory to action?
Validate this criterion with an audit, then deepen the method in the Academy.