{
 "metric": "cert-trust",
 "segment": "vn",
 "anchor": "domain",
 "label": "Vietnam (domains)",
 "population": "domains in Vietnam",
 "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": 146,
  "qf_pct": 10.27,
  "ci": [
   6.33,
   16.26
  ],
  "dist": {
   "self_signed": 4.79,
   "hostname_mismatch": 5.48,
   "ok": 89.73
  },
  "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 54,
   "qf_pct": 1.85,
   "ci": [
    0.33,
    9.77
   ],
   "dist": {
    "ok": 98.15,
    "hostname_mismatch": 1.85,
    "self_signed": 0
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-03",
   "n": 55,
   "qf_pct": 0,
   "ci": [
    0,
    6.53
   ],
   "dist": {
    "self_signed": 0,
    "hostname_mismatch": 0,
    "ok": 100
   },
   "snapshot": "common-crawl-domain-stratified-c150-g2500-seed20260729"
  },
  {
   "day": "2026-08-04",
   "n": 148,
   "qf_pct": 10.14,
   "ci": [
    6.24,
    16.05
   ],
   "dist": {
    "ok": 89.86,
    "hostname_mismatch": 5.41,
    "self_signed": 4.73
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-05",
   "n": 149,
   "qf_pct": 10.07,
   "ci": [
    6.2,
    15.95
   ],
   "dist": {
    "ok": 89.93,
    "hostname_mismatch": 5.37,
    "self_signed": 4.7
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  },
  {
   "day": "2026-08-12",
   "n": 146,
   "qf_pct": 10.27,
   "ci": [
    6.33,
    16.26
   ],
   "dist": {
    "self_signed": 4.79,
    "hostname_mismatch": 5.48,
    "ok": 89.73
   },
   "snapshot": "common-crawl-domain-stratified-c400-g2500-seed20260729"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/cert-trust/vn"
}