{
 "metric": "cert-trust",
 "segment": "global",
 "anchor": "domain",
 "label": "global domains",
 "population": "domains worldwide",
 "states": [
  "ok",
  "hostname_mismatch",
  "self_signed"
 ],
 "quiet_failure_states": [
  "hostname_mismatch",
  "self_signed"
 ],
 "measurement": "Tier 2; compare issuer/subject and check the SAN list covers the host. Denominator: `has_web`.",
 "why_it_matters": "HTTPS is present, the port is open, TLS negotiates — and every visitor gets a browser warning, or would if they checked. Encryption without authentication.",
 "limits": null,
 "data_tier": "tls",
 "population_predicate": "has_web",
 "entity_type": "domain",
 "kind": "failure",
 "latest": {
  "day": "2026-08-12",
  "n": 13945,
  "qf_pct": 7.72,
  "ci": [
   7.28,
   8.17
  ],
  "dist": {
   "ok": 92.28,
   "hostname_mismatch": 5.97,
   "self_signed": 1.74
  },
  "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 5598,
   "qf_pct": 7.77,
   "ci": [
    7.1,
    8.5
   ],
   "dist": {
    "hostname_mismatch": 6.15,
    "self_signed": 1.63,
    "ok": 92.23
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-03",
   "n": 5722,
   "qf_pct": 7.83,
   "ci": [
    7.16,
    8.55
   ],
   "dist": {
    "ok": 92.17,
    "hostname_mismatch": 6.2,
    "self_signed": 1.63
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-04",
   "n": 13981,
   "qf_pct": 7.69,
   "ci": [
    7.26,
    8.14
   ],
   "dist": {
    "ok": 92.31,
    "hostname_mismatch": 5.97,
    "self_signed": 1.72
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-05",
   "n": 13969,
   "qf_pct": 7.75,
   "ci": [
    7.32,
    8.21
   ],
   "dist": {
    "ok": 92.25,
    "hostname_mismatch": 6.01,
    "self_signed": 1.75
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-12",
   "n": 13945,
   "qf_pct": 7.72,
   "ci": [
    7.28,
    8.17
   ],
   "dist": {
    "ok": 92.28,
    "hostname_mismatch": 5.97,
    "self_signed": 1.74
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/cert-trust/global"
}