{
 "metric": "security-headers",
 "segment": "is",
 "anchor": "domain",
 "label": "Iceland (domains)",
 "population": "domains in Iceland",
 "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": 213,
  "qf_pct": 83.57,
  "ci": [
   78.01,
   87.94
  ],
  "dist": {
   "strong": 16.43,
   "partial": 37.09,
   "missing": 46.48
  },
  "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 70,
   "qf_pct": 84.29,
   "ci": [
    74.01,
    90.99
   ],
   "dist": {
    "strong": 15.71,
    "partial": 25.71,
    "missing": 58.57
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-03",
   "n": 71,
   "qf_pct": 74.65,
   "ci": [
    63.45,
    83.32
   ],
   "dist": {
    "strong": 25.35,
    "partial": 25.35,
    "missing": 49.3
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-04",
   "n": 213,
   "qf_pct": 83.57,
   "ci": [
    78.01,
    87.94
   ],
   "dist": {
    "strong": 16.43,
    "partial": 35.68,
    "missing": 47.89
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-05",
   "n": 214,
   "qf_pct": 83.18,
   "ci": [
    77.59,
    87.59
   ],
   "dist": {
    "strong": 16.82,
    "partial": 35.51,
    "missing": 47.66
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-06",
   "n": 214,
   "qf_pct": 81.78,
   "ci": [
    76.06,
    86.37
   ],
   "dist": {
    "strong": 18.22,
    "partial": 34.11,
    "missing": 47.66
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-13",
   "n": 213,
   "qf_pct": 83.57,
   "ci": [
    78.01,
    87.94
   ],
   "dist": {
    "strong": 16.43,
    "partial": 37.09,
    "missing": 46.48
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/security-headers/is"
}