Security headers · France micro companies

What share of France micro companies have no HSTS or Content-Security-Policy header?

82.99%

82.99% of France micro companies (95% CI 76.1–88.21%), measured across 147 companies on 2026-08-13.

strong: 17.01%partial: 21.09%missing: 61.9%
strong · 17.01%partial · 21.09%missing · 61.9%
Trend

Measured every Thursday since 2026-08-01 — 4 observations to date. Last measured 2026-08-13.

How this is measured

Tier 3a; check Strict-Transport-Security, Content-Security-Policy, X-Frame-Options on the homepage response. Denominator: has_web.

Passive measurement: a single DNS lookup, TLS handshake, or homepage GET per domain. Aggregate-only; no individual company is named. 95% Wilson confidence intervals. Population: national company registries (Companies House, Brreg, SIRENE), sampled by size band and resolved to email-active domains. Parked domains excluded. Snapshot: sirene-france-per600-seed20260730.

Licensed CC BY 4.0 — reuse with attribution to Quiet Failures. Download: JSON · CSV.

Why it matters

HSTS is what stops the first, downgradeable request; CSP is what limits the damage of injected script. Both are one-line changes, and both are commonly switched off silently by a framework upgrade or a proxy change.

The same check, other segments

Show the remaining 65 segments

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