{
 "metric": "security-headers",
 "segment": "ca",
 "anchor": "domain",
 "label": "Canada (domains)",
 "population": "domains in Canada",
 "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": 196,
  "qf_pct": 77.04,
  "ci": [
   70.67,
   82.38
  ],
  "dist": {
   "strong": 22.96,
   "partial": 28.57,
   "missing": 48.47
  },
  "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 86,
   "qf_pct": 84.88,
   "ci": [
    75.84,
    90.95
   ],
   "dist": {
    "strong": 15.12,
    "partial": 22.09,
    "missing": 62.79
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-03",
   "n": 90,
   "qf_pct": 81.11,
   "ci": [
    71.82,
    87.86
   ],
   "dist": {
    "strong": 18.89,
    "partial": 22.22,
    "missing": 58.89
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-04",
   "n": 195,
   "qf_pct": 77.44,
   "ci": [
    71.07,
    82.74
   ],
   "dist": {
    "strong": 22.56,
    "partial": 29.23,
    "missing": 48.21
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-05",
   "n": 197,
   "qf_pct": 77.16,
   "ci": [
    70.81,
    82.47
   ],
   "dist": {
    "strong": 22.84,
    "partial": 28.43,
    "missing": 48.73
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-06",
   "n": 199,
   "qf_pct": 75.88,
   "ci": [
    69.48,
    81.3
   ],
   "dist": {
    "strong": 24.12,
    "partial": 26.63,
    "missing": 49.25
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-13",
   "n": 196,
   "qf_pct": 77.04,
   "ci": [
    70.67,
    82.38
   ],
   "dist": {
    "strong": 22.96,
    "partial": 28.57,
    "missing": 48.47
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/security-headers/ca"
}