{
 "metric": "security-headers",
 "segment": "gb-micro",
 "anchor": "company",
 "label": "UK micro companies",
 "population": "UK micro 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": 188,
  "qf_pct": 77.66,
  "ci": [
   71.19,
   83.03
  ],
  "dist": {
   "strong": 22.34,
   "missing": 51.06,
   "partial": 26.6
  },
  "snapshot": "uk-companies-house-per600-seed20260728"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 78,
   "qf_pct": 79.49,
   "ci": [
    69.25,
    86.96
   ],
   "dist": {
    "strong": 20.51,
    "partial": 21.79,
    "missing": 57.69
   },
   "snapshot": "uk-companies-house-per300-seed20260728"
  },
  {
   "day": "2026-08-03",
   "n": 84,
   "qf_pct": 80.95,
   "ci": [
    71.28,
    87.92
   ],
   "dist": {
    "strong": 19.05,
    "partial": 22.62,
    "missing": 58.33
   },
   "snapshot": "uk-companies-house-per300-seed20260728"
  },
  {
   "day": "2026-08-04",
   "n": 188,
   "qf_pct": 78.19,
   "ci": [
    71.76,
    83.5
   ],
   "dist": {
    "strong": 21.81,
    "partial": 27.13,
    "missing": 51.06
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-05",
   "n": 188,
   "qf_pct": 77.66,
   "ci": [
    71.19,
    83.03
   ],
   "dist": {
    "strong": 22.34,
    "partial": 26.6,
    "missing": 51.06
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-06",
   "n": 187,
   "qf_pct": 77.01,
   "ci": [
    70.47,
    82.46
   ],
   "dist": {
    "strong": 22.99,
    "partial": 26.2,
    "missing": 50.8
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-13",
   "n": 188,
   "qf_pct": 77.66,
   "ci": [
    71.19,
    83.03
   ],
   "dist": {
    "strong": 22.34,
    "missing": 51.06,
    "partial": 26.6
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/security-headers/gb-micro"
}