{
 "metric": "security-headers",
 "segment": "gb-no-accounts",
 "anchor": "company",
 "label": "UK newly-formed (no accounts filed) companies",
 "population": "UK newly-formed (no accounts filed) companies",
 "states": [
  "strong",
  "partial",
  "missing"
 ],
 "quiet_failure_states": [
  "partial",
  "missing"
 ],
 "measurement": "Tier 3a; check `Strict-Transport-Security`, `Content-Security-Policy`, `X-Frame-Options` on the homepage response. Denominator: `has_web`.",
 "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.",
 "limits": null,
 "data_tier": "http_3a",
 "population_predicate": "has_web",
 "entity_type": "domain",
 "kind": "failure",
 "latest": {
  "day": "2026-08-13",
  "n": 158,
  "qf_pct": 71.52,
  "ci": [
   64.04,
   77.98
  ],
  "dist": {
   "strong": 28.48,
   "partial": 18.99,
   "missing": 52.53
  },
  "snapshot": "uk-companies-house-per600-seed20260728"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 73,
   "qf_pct": 75.34,
   "ci": [
    64.36,
    83.8
   ],
   "dist": {
    "strong": 24.66,
    "partial": 23.29,
    "missing": 52.05
   },
   "snapshot": "uk-companies-house-per300-seed20260728"
  },
  {
   "day": "2026-08-03",
   "n": 75,
   "qf_pct": 70.67,
   "ci": [
    59.56,
    79.76
   ],
   "dist": {
    "strong": 29.33,
    "partial": 26.67,
    "missing": 44
   },
   "snapshot": "uk-companies-house-per300-seed20260728"
  },
  {
   "day": "2026-08-04",
   "n": 156,
   "qf_pct": 73.08,
   "ci": [
    65.62,
    79.42
   ],
   "dist": {
    "strong": 26.92,
    "partial": 19.87,
    "missing": 53.21
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-05",
   "n": 155,
   "qf_pct": 71.61,
   "ci": [
    64.06,
    78.12
   ],
   "dist": {
    "strong": 28.39,
    "partial": 19.35,
    "missing": 52.26
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-06",
   "n": 155,
   "qf_pct": 71.61,
   "ci": [
    64.06,
    78.12
   ],
   "dist": {
    "strong": 28.39,
    "partial": 20,
    "missing": 51.61
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-13",
   "n": 158,
   "qf_pct": 71.52,
   "ci": [
    64.04,
    77.98
   ],
   "dist": {
    "strong": 28.48,
    "partial": 18.99,
    "missing": 52.53
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/security-headers/gb-no-accounts"
}