{
 "metric": "security-headers",
 "segment": "es",
 "anchor": "domain",
 "label": "Spain (domains)",
 "population": "domains in Spain",
 "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": 215,
  "qf_pct": 89.3,
  "ci": [
   84.46,
   92.77
  ],
  "dist": {
   "strong": 10.7,
   "partial": 21.86,
   "missing": 67.44
  },
  "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 73,
   "qf_pct": 84.93,
   "ci": [
    75,
    91.37
   ],
   "dist": {
    "strong": 15.07,
    "partial": 20.55,
    "missing": 64.38
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-03",
   "n": 76,
   "qf_pct": 84.21,
   "ci": [
    74.4,
    90.73
   ],
   "dist": {
    "strong": 15.79,
    "partial": 21.05,
    "missing": 63.16
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-04",
   "n": 218,
   "qf_pct": 89.91,
   "ci": [
    85.19,
    93.24
   ],
   "dist": {
    "strong": 10.09,
    "partial": 22.02,
    "missing": 67.89
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-05",
   "n": 217,
   "qf_pct": 89.4,
   "ci": [
    84.6,
    92.83
   ],
   "dist": {
    "strong": 10.6,
    "partial": 22.12,
    "missing": 67.28
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-06",
   "n": 218,
   "qf_pct": 89.45,
   "ci": [
    84.67,
    92.87
   ],
   "dist": {
    "strong": 10.55,
    "partial": 22.02,
    "missing": 67.43
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-13",
   "n": 215,
   "qf_pct": 89.3,
   "ci": [
    84.46,
    92.77
   ],
   "dist": {
    "strong": 10.7,
    "partial": 21.86,
    "missing": 67.44
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/security-headers/es"
}