Confirmed: censorship detected in Cuba

Voidly Research

Incident record · Cuba

Censorship detected in CU

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: 100%
Source measurement count: 1
Incident confidence: 90%

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

Follow the evidence

1 linked records.

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

Linked observation dates

1 dated · 0 without a verified timezone

OONI1 linked record

Sep 11, 2026 · 06:00 UTCSingle observed timestamp

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.

OONI1 record · open evidence

blocking · critical

ooni:live:CU:facebook_messenger:2026-09-11:06

Sep 11, 2026 · 06:00 UTC

OONI facebook_messenger: 1/1 measurements anomalous (100.0%)
Upstream claim · OONI

Signal value: 1
Signal baseline: Unavailable
Evidence confidence: 90%
Link confidence: 90%

Why it is linked: OONI live measurements

Retrieved: Sep 12, 2026 · 03:01 UTC

Open upstream source

Complete evidence record

{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.9,
  "continent": "Americas",
  "countryCode": "CU",
  "domain": null,
  "domainCategory": null,
  "id": 422346925,
  "kind": "measurement",
  "linkConfidence": 0.9,
  "linkReason": "OONI live measurements",
  "observedAt": "2026-09-11T06:00:00Z",
  "probeNodeId": null,
  "regionCode": null,
  "retrievedAt": "2026-09-12T03:01:33.817376Z",
  "riskTier": 2,
  "signalBaseline": null,
  "signalLevel": "critical",
  "signalType": "blocking",
  "signalValue": 1,
  "source": "ooni",
  "sourceRef": "ooni:live:CU:facebook_messenger:2026-09-11:06",
  "sourceUrl": "https://explorer.ooni.org/search?probe_cc=CU&test_name=facebook_messenger&since=2026-09-11&until=2026-09-12&only=anomalies",
  "unSubregion": "Caribbean",
  "upstreamCause": null,
  "upstreamClaim": "OONI facebook_messenger: 1/1 measurements anomalous (100.0%)",
  "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": 1,
  "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

Facebook Messenger

Incident mechanism

No mechanism specified at the incident level.

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": 1,
      "method": "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.

BibTeX ↓RIS ↓Markdown ↓JSON ↓Full citation page →

APA citation

Voidly Research. (2026). Censorship detected in CU [CU-2026-0604]. Voidly Global Censorship Index. https://voidly.ai/incident/CU-2026-0604

The record over time.

Created: 2026-09-12 03:06:46.613704 · timezone unspecified
Last updated: 2026-09-12 03:06:46.613704 · timezone unspecified
Revision: 1

Revision history and original fields

Revision-history array unavailable.

Canonical ID: CU-2026-0604. Source ID: CU-2026-0604. Hash ID: b331ffb2c8a0.

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": [
    "Facebook Messenger"
  ],
  "anomalyRate": 1,
  "attribution": {
    "asns_attributed": 0,
    "domains_attributed": 0,
    "methods": [
      {
        "evidence_count": 1,
        "method": "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": 0.9,
  "corroboration": {
    "description": "Single source: ooni",
    "evidenceCount": 1,
    "level": "low",
    "score": 0.6,
    "sourceCount": 1,
    "sources": [
      "ooni"
    ]
  },
  "country": "CU",
  "countryName": "Cuba",
  "createdAt": "2026-09-12T03:06:46.613704",
  "description": null,
  "duration": 1439,
  "durationHours": 23.9997,
  "endTime": "2026-09-11T23:59:59Z",
  "evidence": [
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.9,
      "continent": "Americas",
      "countryCode": "CU",
      "domain": null,
      "domainCategory": null,
      "id": 422346925,
      "kind": "measurement",
      "linkConfidence": 0.9,
      "linkReason": "OONI live measurements",
      "observedAt": "2026-09-11T06:00:00Z",
      "probeNodeId": null,
      "regionCode": null,
      "retrievedAt": "2026-09-12T03:01:33.817376Z",
      "riskTier": 2,
      "signalBaseline": null,
      "signalLevel": "critical",
      "signalType": "blocking",
      "signalValue": 1,
      "source": "ooni",
      "sourceRef": "ooni:live:CU:facebook_messenger:2026-09-11:06",
      "sourceUrl": "https://explorer.ooni.org/search?probe_cc=CU&test_name=facebook_messenger&since=2026-09-11&until=2026-09-12&only=anomalies",
      "unSubregion": "Caribbean",
      "upstreamCause": null,
      "upstreamClaim": "OONI facebook_messenger: 1/1 measurements anomalous (100.0%)",
      "upstreamSeverity": null
    }
  ],
  "evidenceCount": 1,
  "evidenceSourceBreakdown": {
    "ooni": 1
  },
  "evidenceSpan": {
    "earliest": "2026-09-11T06:00:00Z",
    "latest": "2026-09-11T06:00:00Z"
  },
  "flag": "🇨🇺",
  "generated_at_utc": "2026-09-13T18:45:50.237304Z",
  "hashId": "b331ffb2c8a0",
  "id": "CU-2026-0604",
  "incidentType": "censorship",
  "measurementCount": 1,
  "mechanism": null,
  "readableId": "CU-2026-0604",
  "reportUrl": "https://api.voidly.ai/data/incidents/b331ffb2c8a0/report?format=markdown",
  "revision": 1,
  "severity": "critical",
  "severityGrade": "B",
  "sources": [
    "ooni"
  ],
  "startTime": "2026-09-11T00:00:00Z",
  "status": "suspected",
  "title": "Censorship detected in CU",
  "updatedAt": "2026-09-12T03:06:46.613704"
}

All Cuba incidents

Sep 12, 2026 · censorshipCensorship detected in CU Sep 9, 2026 · censorshipInternet censorship detected in Cuba Sep 8, 2026 · censorshipCensorship detected in CU Sep 7, 2026 · censorshipCensorship detected in CU Sep 6, 2026 · censorshipCensorship detected in CU Sep 3, 2026 · censorshipCensorship detected in CU

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

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