{
 "metric": "security-headers",
 "segment": "vn",
 "anchor": "domain",
 "label": "Vietnam (domains)",
 "population": "domains in Vietnam",
 "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": 146,
  "qf_pct": 82.88,
  "ci": [
   75.94,
   88.12
  ],
  "dist": {
   "strong": 17.12,
   "partial": 18.49,
   "missing": 64.38
  },
  "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 50,
   "qf_pct": 86,
   "ci": [
    73.81,
    93.05
   ],
   "dist": {
    "strong": 14,
    "partial": 14,
    "missing": 72
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-03",
   "n": 53,
   "qf_pct": 84.91,
   "ci": [
    72.95,
    92.15
   ],
   "dist": {
    "strong": 15.09,
    "partial": 13.21,
    "missing": 71.7
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-04",
   "n": 147,
   "qf_pct": 83.67,
   "ci": [
    76.86,
    88.78
   ],
   "dist": {
    "strong": 16.33,
    "partial": 18.37,
    "missing": 65.31
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-05",
   "n": 148,
   "qf_pct": 83.11,
   "ci": [
    76.25,
    88.29
   ],
   "dist": {
    "strong": 16.89,
    "partial": 18.24,
    "missing": 64.86
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-06",
   "n": 146,
   "qf_pct": 82.88,
   "ci": [
    75.94,
    88.12
   ],
   "dist": {
    "strong": 17.12,
    "partial": 17.81,
    "missing": 65.07
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-13",
   "n": 146,
   "qf_pct": 82.88,
   "ci": [
    75.94,
    88.12
   ],
   "dist": {
    "strong": 17.12,
    "partial": 18.49,
    "missing": 64.38
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/security-headers/vn"
}