{
 "metric": "security-headers",
 "segment": "kr",
 "anchor": "domain",
 "label": "South Korea (domains)",
 "population": "domains in South Korea",
 "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": 93.67,
  "ci": [
   88.74,
   96.53
  ],
  "dist": {
   "strong": 6.33,
   "partial": 15.82,
   "missing": 77.85
  },
  "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 49,
   "qf_pct": 97.96,
   "ci": [
    89.31,
    99.64
   ],
   "dist": {
    "strong": 2.04,
    "partial": 16.33,
    "missing": 81.63
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-03",
   "n": 50,
   "qf_pct": 98,
   "ci": [
    89.5,
    99.65
   ],
   "dist": {
    "strong": 2,
    "partial": 16,
    "missing": 82
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-04",
   "n": 160,
   "qf_pct": 93.75,
   "ci": [
    88.88,
    96.57
   ],
   "dist": {
    "strong": 6.25,
    "partial": 16.25,
    "missing": 77.5
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-05",
   "n": 161,
   "qf_pct": 93.79,
   "ci": [
    88.95,
    96.59
   ],
   "dist": {
    "strong": 6.21,
    "partial": 16.77,
    "missing": 77.02
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-06",
   "n": 162,
   "qf_pct": 93.83,
   "ci": [
    89.01,
    96.61
   ],
   "dist": {
    "strong": 6.17,
    "partial": 16.67,
    "missing": 77.16
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-13",
   "n": 158,
   "qf_pct": 93.67,
   "ci": [
    88.74,
    96.53
   ],
   "dist": {
    "strong": 6.33,
    "partial": 15.82,
    "missing": 77.85
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/security-headers/kr"
}