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Data

Incident record · Vietnam

Censorship detected in VN

Type
censorship
Status
suspected
Severity
critical
Inspect evidence Cite this incident

Source summary

No description was supplied in this record.

Open incident JSON
Reported anomaly rate
71.4%

Source-defined signal; not a universal test-failure percentage.

Source measurement count
4

The record’s count can represent aggregate inputs or alerts.

Incident confidence
78.6%

A source score, not certainty of intentional censorship.

Linked evidence has its own count and confidence fields. These quantities are not interchangeable.

Follow the evidence

4 linked records.

Inspect the observation, the upstream claim and why it was linked.

Linked observation dates

4 dated · 0 without a verified timezone
OONI4 linked records
Jul 18, 2026 · 00:00 UTCJul 18, 2026 · 18:00 UTC

Each point is a linked record. Horizontal position shows observation time; stacking separates nearby points. The full records below provide the values. This is not a measured outage-duration chart.

Upstream claims are attributed to their source. Multiple records or source names do not by themselves establish independent corroboration.

OONI4 records · open evidence

tor-blocking · critical

ooni:live:VN:tor:2026-07-18:18

OONI tor: 22/31 measurements anomalous (71.0%)

Upstream claim · OONI
Signal value
0.709677
Signal baseline
Unavailable
Evidence confidence
78.4%
Link confidence
90%

Why it is linked: OONI live measurements

Retrieved
Jul 19, 2026 · 03:00 UTC
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.7838709677419355,
  "continent": "Asia",
  "countryCode": "VN",
  "domain": null,
  "domainCategory": null,
  "id": 238737931,
  "kind": "measurement",
  "linkConfidence": 0.9,
  "linkReason": "OONI live measurements",
  "observedAt": "2026-07-18T18:00:00Z",
  "probeNodeId": null,
  "regionCode": null,
  "retrievedAt": "2026-07-19T03:00:45.919411Z",
  "riskTier": 2,
  "signalBaseline": null,
  "signalLevel": "critical",
  "signalType": "tor-blocking",
  "signalValue": 0.7096774193548387,
  "source": "ooni",
  "sourceRef": "ooni:live:VN:tor:2026-07-18:18",
  "sourceUrl": "https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-07-18&until=2026-07-19&only=anomalies",
  "unSubregion": "South-Eastern Asia",
  "upstreamCause": null,
  "upstreamClaim": "OONI tor: 22/31 measurements anomalous (71.0%)",
  "upstreamSeverity": null
}

tor-blocking · elevated

ooni:live:VN:tor:2026-07-18:12

OONI tor: 8/14 measurements anomalous (57.1%)

Upstream claim · OONI
Signal value
0.571429
Signal baseline
Unavailable
Evidence confidence
72.9%
Link confidence
90%

Why it is linked: OONI live measurements

Retrieved
Jul 19, 2026 · 03:00 UTC
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.7285714285714285,
  "continent": "Asia",
  "countryCode": "VN",
  "domain": null,
  "domainCategory": null,
  "id": 238737930,
  "kind": "measurement",
  "linkConfidence": 0.9,
  "linkReason": "OONI live measurements",
  "observedAt": "2026-07-18T12:00:00Z",
  "probeNodeId": null,
  "regionCode": null,
  "retrievedAt": "2026-07-19T03:00:45.919411Z",
  "riskTier": 2,
  "signalBaseline": null,
  "signalLevel": "elevated",
  "signalType": "tor-blocking",
  "signalValue": 0.5714285714285714,
  "source": "ooni",
  "sourceRef": "ooni:live:VN:tor:2026-07-18:12",
  "sourceUrl": "https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-07-18&until=2026-07-19&only=anomalies",
  "unSubregion": "South-Eastern Asia",
  "upstreamCause": null,
  "upstreamClaim": "OONI tor: 8/14 measurements anomalous (57.1%)",
  "upstreamSeverity": null
}

tor-blocking · critical

ooni:live:VN:tor:2026-07-18:06

OONI tor: 15/21 measurements anomalous (71.4%)

Upstream claim · OONI
Signal value
0.714286
Signal baseline
Unavailable
Evidence confidence
78.6%
Link confidence
90%

Why it is linked: OONI live measurements

Retrieved
Jul 19, 2026 · 03:00 UTC
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.7857142857142858,
  "continent": "Asia",
  "countryCode": "VN",
  "domain": null,
  "domainCategory": null,
  "id": 238737929,
  "kind": "measurement",
  "linkConfidence": 0.9,
  "linkReason": "OONI live measurements",
  "observedAt": "2026-07-18T06:00:00Z",
  "probeNodeId": null,
  "regionCode": null,
  "retrievedAt": "2026-07-19T03:00:45.919411Z",
  "riskTier": 2,
  "signalBaseline": null,
  "signalLevel": "critical",
  "signalType": "tor-blocking",
  "signalValue": 0.7142857142857143,
  "source": "ooni",
  "sourceRef": "ooni:live:VN:tor:2026-07-18:06",
  "sourceUrl": "https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-07-18&until=2026-07-19&only=anomalies",
  "unSubregion": "South-Eastern Asia",
  "upstreamCause": null,
  "upstreamClaim": "OONI tor: 15/21 measurements anomalous (71.4%)",
  "upstreamSeverity": null
}

tor-blocking · elevated

ooni:live:VN:tor:2026-07-18:00

OONI tor: 10/16 measurements anomalous (62.5%)

Upstream claim · OONI
Signal value
0.625
Signal baseline
Unavailable
Evidence confidence
75%
Link confidence
90%

Why it is linked: OONI live measurements

Retrieved
Jul 19, 2026 · 03:00 UTC
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.75,
  "continent": "Asia",
  "countryCode": "VN",
  "domain": null,
  "domainCategory": null,
  "id": 238737928,
  "kind": "measurement",
  "linkConfidence": 0.9,
  "linkReason": "OONI live measurements",
  "observedAt": "2026-07-18T00:00:00Z",
  "probeNodeId": null,
  "regionCode": null,
  "retrievedAt": "2026-07-19T03:00:45.919411Z",
  "riskTier": 2,
  "signalBaseline": null,
  "signalLevel": "elevated",
  "signalType": "tor-blocking",
  "signalValue": 0.625,
  "source": "ooni",
  "sourceRef": "ooni:live:VN:tor:2026-07-18:00",
  "sourceUrl": "https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-07-18&until=2026-07-19&only=anomalies",
  "unSubregion": "South-Eastern Asia",
  "upstreamCause": null,
  "upstreamClaim": "OONI tor: 10/16 measurements anomalous (62.5%)",
  "upstreamSeverity": null
}
Source-reported corroboration

The source’s corroboration assessment is separate from incident confidence and evidence-link confidence. Inspect its source list, count and description.

{
  "description": "Single source: ooni",
  "evidenceCount": 4,
  "level": "low",
  "score": 0.6,
  "sourceCount": 1,
  "sources": [
    "ooni"
  ]
}

Declared incident sources: OONI.

This record does not list two distinct sources. Treat it as a single-source or uncorroborated record.

Scope and attribution

What the record names.

Methodology

Affected services

Tor

Incident mechanism

Tor blocking

Individual evidence may carry more specific methods. Those do not automatically describe the entire incident.

Affected domains · 0

Domains named by the source record. Each link opens country-specific OONI measurements; a named domain is not a blanket national-block verdict.

No domains named.

Networks and evidence attribution

ASNs named by this source record: None listed.

This aggregate describes fields literally present in linked evidence. It does not identify who caused an event or prove intent.

{
  "asns_attributed": 0,
  "domains_attributed": 0,
  "methods": [
    {
      "evidence_count": 4,
      "method": "tor-blocking"
    }
  ],
  "note": "Aggregated from this incident's linked evidence rows — only domains, ASNs, and blocking methods the evidence literally records are shown, with the per-item evidence count. No per-domain/per-ASN attribution is present in the linked evidence for this incident (e.g. country/ASN-level outage signals).",
  "sources": [
    "ooni"
  ],
  "top_asns": [],
  "top_domains": []
}
What this record cannot establish

Measurements alone do not attribute an event to a government, ISP or another actor, and do not establish intent. An outage or anomalous result can have several explanations.

The country label is an aggregation scope. It is not a census of every network, city or service. Regional or ASN fields belong to their individual source evidence and should not be expanded into a national claim.

The source observation window and evidence timestamps do not prove an exact start and stop of blocking.

Signal definitions, baseline rates and model versions depend on the source. This record does not establish a common baseline or calibrated certainty. Use the source’s specific signal definition and evaluation before interpreting a score.

Inspect measurement coverage

Cite this incident

Take the record
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Use the permanent published URL.
The original source title is preserved.

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The record over time.

Created
2026-08-01 01:33:46.523314 · timezone unspecified
Last updated
2026-08-01 01:33:46.523314 · timezone unspecified
Revision
1
Revision history and original fields

Revision-history array unavailable.

Canonical ID: VN-2026-0942. Source ID: VN-2026-0942. Hash ID: 5236cfb3718e.

Additional source duration field: 23.9997 hours. It is retained separately from the minutes field and does not establish a verified event duration.

Complete source JSON
{
  "affectedAsns": [],
  "affectedDomains": [],
  "affectedServices": [
    "Tor"
  ],
  "anomalyRate": 0.7142857142857143,
  "attribution": {
    "asns_attributed": 0,
    "domains_attributed": 0,
    "methods": [
      {
        "evidence_count": 4,
        "method": "tor-blocking"
      }
    ],
    "note": "Aggregated from this incident's linked evidence rows — only domains, ASNs, and blocking methods the evidence literally records are shown, with the per-item evidence count. No per-domain/per-ASN attribution is present in the linked evidence for this incident (e.g. country/ASN-level outage signals).",
    "sources": [
      "ooni"
    ],
    "top_asns": [],
    "top_domains": []
  },
  "confidence": 0.7857142857142858,
  "corroboration": {
    "description": "Single source: ooni",
    "evidenceCount": 4,
    "level": "low",
    "score": 0.6,
    "sourceCount": 1,
    "sources": [
      "ooni"
    ]
  },
  "country": "VN",
  "countryName": "Vietnam",
  "createdAt": "2026-08-01T01:33:46.523314",
  "description": null,
  "duration": 1439,
  "durationHours": 23.9997,
  "endTime": "2026-07-18T23:59:59Z",
  "evidence": [
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.7838709677419355,
      "continent": "Asia",
      "countryCode": "VN",
      "domain": null,
      "domainCategory": null,
      "id": 238737931,
      "kind": "measurement",
      "linkConfidence": 0.9,
      "linkReason": "OONI live measurements",
      "observedAt": "2026-07-18T18:00:00Z",
      "probeNodeId": null,
      "regionCode": null,
      "retrievedAt": "2026-07-19T03:00:45.919411Z",
      "riskTier": 2,
      "signalBaseline": null,
      "signalLevel": "critical",
      "signalType": "tor-blocking",
      "signalValue": 0.7096774193548387,
      "source": "ooni",
      "sourceRef": "ooni:live:VN:tor:2026-07-18:18",
      "sourceUrl": "https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-07-18&until=2026-07-19&only=anomalies",
      "unSubregion": "South-Eastern Asia",
      "upstreamCause": null,
      "upstreamClaim": "OONI tor: 22/31 measurements anomalous (71.0%)",
      "upstreamSeverity": null
    },
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.7285714285714285,
      "continent": "Asia",
      "countryCode": "VN",
      "domain": null,
      "domainCategory": null,
      "id": 238737930,
      "kind": "measurement",
      "linkConfidence": 0.9,
      "linkReason": "OONI live measurements",
      "observedAt": "2026-07-18T12:00:00Z",
      "probeNodeId": null,
      "regionCode": null,
      "retrievedAt": "2026-07-19T03:00:45.919411Z",
      "riskTier": 2,
      "signalBaseline": null,
      "signalLevel": "elevated",
      "signalType": "tor-blocking",
      "signalValue": 0.5714285714285714,
      "source": "ooni",
      "sourceRef": "ooni:live:VN:tor:2026-07-18:12",
      "sourceUrl": "https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-07-18&until=2026-07-19&only=anomalies",
      "unSubregion": "South-Eastern Asia",
      "upstreamCause": null,
      "upstreamClaim": "OONI tor: 8/14 measurements anomalous (57.1%)",
      "upstreamSeverity": null
    },
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.7857142857142858,
      "continent": "Asia",
      "countryCode": "VN",
      "domain": null,
      "domainCategory": null,
      "id": 238737929,
      "kind": "measurement",
      "linkConfidence": 0.9,
      "linkReason": "OONI live measurements",
      "observedAt": "2026-07-18T06:00:00Z",
      "probeNodeId": null,
      "regionCode": null,
      "retrievedAt": "2026-07-19T03:00:45.919411Z",
      "riskTier": 2,
      "signalBaseline": null,
      "signalLevel": "critical",
      "signalType": "tor-blocking",
      "signalValue": 0.7142857142857143,
      "source": "ooni",
      "sourceRef": "ooni:live:VN:tor:2026-07-18:06",
      "sourceUrl": "https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-07-18&until=2026-07-19&only=anomalies",
      "unSubregion": "South-Eastern Asia",
      "upstreamCause": null,
      "upstreamClaim": "OONI tor: 15/21 measurements anomalous (71.4%)",
      "upstreamSeverity": null
    },
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.75,
      "continent": "Asia",
      "countryCode": "VN",
      "domain": null,
      "domainCategory": null,
      "id": 238737928,
      "kind": "measurement",
      "linkConfidence": 0.9,
      "linkReason": "OONI live measurements",
      "observedAt": "2026-07-18T00:00:00Z",
      "probeNodeId": null,
      "regionCode": null,
      "retrievedAt": "2026-07-19T03:00:45.919411Z",
      "riskTier": 2,
      "signalBaseline": null,
      "signalLevel": "elevated",
      "signalType": "tor-blocking",
      "signalValue": 0.625,
      "source": "ooni",
      "sourceRef": "ooni:live:VN:tor:2026-07-18:00",
      "sourceUrl": "https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-07-18&until=2026-07-19&only=anomalies",
      "unSubregion": "South-Eastern Asia",
      "upstreamCause": null,
      "upstreamClaim": "OONI tor: 10/16 measurements anomalous (62.5%)",
      "upstreamSeverity": null
    }
  ],
  "evidenceCount": 4,
  "evidenceSourceBreakdown": {
    "ooni": 4
  },
  "evidenceSpan": {
    "earliest": "2026-07-18T00:00:00Z",
    "latest": "2026-07-18T18:00:00Z"
  },
  "flag": "🇻🇳",
  "generated_at_utc": "2026-09-20T17:33:12.277544Z",
  "hashId": "5236cfb3718e",
  "id": "VN-2026-0942",
  "incidentType": "censorship",
  "measurementCount": 4,
  "mechanism": "Tor blocking",
  "readableId": "VN-2026-0942",
  "reportUrl": "https://api.voidly.ai/data/incidents/5236cfb3718e/report?format=markdown",
  "revision": 1,
  "severity": "critical",
  "severityGrade": "B",
  "sources": [
    "ooni"
  ],
  "startTime": "2026-07-18T00:00:00Z",
  "status": "suspected",
  "title": "Censorship detected in VN",
  "updatedAt": "2026-08-01T01:33:46.523314"
}
All Vietnam incidents
Sep 19, 2026 · censorshipCensorship detected in VNSep 16, 2026 · censorshipInternet censorship detected in VietnamSep 13, 2026 · censorshipInternet censorship detected in VietnamSep 9, 2026 · censorshipInternet censorship detected in VietnamSep 8, 2026 · censorshipCensorship detected in VNSep 6, 2026 · censorshipInternet censorship detected in Vietnam
More with the same mechanism · Tor blocking
Jul 27, 2026Censorship detected in VNJul 25, 2026Censorship detected in VNJul 20, 2026Censorship detected in VNJul 19, 2026Censorship detected in VNJul 17, 2026Censorship detected in VN

Related records come from up to 100 recent records in the same country. They do not establish a causal connection.

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