{
 "metric": "cert-trust",
 "segment": "tw",
 "anchor": "domain",
 "label": "Taiwan (domains)",
 "population": "domains in Taiwan",
 "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": 161,
  "qf_pct": 10.56,
  "ci": [
   6.7,
   16.26
  ],
  "dist": {
   "self_signed": 4.35,
   "hostname_mismatch": 6.21,
   "ok": 89.44
  },
  "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 47,
   "qf_pct": 14.89,
   "ci": [
    7.41,
    27.69
   ],
   "dist": {
    "ok": 85.11,
    "hostname_mismatch": 10.64,
    "self_signed": 4.26
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-03",
   "n": 48,
   "qf_pct": 16.67,
   "ci": [
    8.7,
    29.58
   ],
   "dist": {
    "self_signed": 4.17,
    "hostname_mismatch": 12.5,
    "ok": 83.33
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-04",
   "n": 164,
   "qf_pct": 10.37,
   "ci": [
    6.57,
    15.97
   ],
   "dist": {
    "ok": 89.63,
    "hostname_mismatch": 6.71,
    "self_signed": 3.66
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-05",
   "n": 163,
   "qf_pct": 11.04,
   "ci": [
    7.1,
    16.78
   ],
   "dist": {
    "ok": 88.96,
    "hostname_mismatch": 7.36,
    "self_signed": 3.68
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-12",
   "n": 161,
   "qf_pct": 10.56,
   "ci": [
    6.7,
    16.26
   ],
   "dist": {
    "self_signed": 4.35,
    "hostname_mismatch": 6.21,
    "ok": 89.44
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/cert-trust/tw"
}