methodology / Security & Infrastructure / #5

SSL certificate validity & expiration window

proposed factor #5 · Security & Infrastructure · scoring impl: todo · weight 2%

What we measure

Your SSL certificate proves to visitors that they're connecting securely. Expired or missing certificates trigger 'Not Secure' warnings.

How to improve your score

Use Let's Encrypt (free, auto-renewing) or your hosting provider's managed SSL. Configure auto-renewal so it never expires.

Data source

Data source for this factor is not yet documented.

Scoring

Scoring formulas are versioned with the methodology. The current method (v1.1.0) maps raw measurements to pass, warn, fail. Factor weights determine how much each contributes to the composite — see the methodology index for the full table.

Version history

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