Internet connectivity disruption in Brazil

{
  "affectedAsns": [],
  "affectedDomains": [],
  "affectedServices": [],
  "anomalyRate": 0.7908784686856064,
  "attribution": {
    "asns_attributed": 0,
    "domains_attributed": 0,
    "methods": [
      {
        "evidence_count": 202,
        "method": "outage"
      }
    ],
    "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": [
      "ioda"
    ],
    "top_asns": [],
    "top_domains": []
  },
  "confidence": 0.75,
  "corroboration": {
    "description": "Single source: ioda",
    "evidenceCount": 202,
    "level": "low",
    "score": 0.65,
    "sourceCount": 1,
    "sources": [
      "ioda"
    ]
  },
  "country": "BR",
  "countryName": "Brazil",
  "createdAt": "2026-09-20T06:00:09.877348",
  "description": "IODA detected significant connectivity drop in Brazil. 54 critical alerts recorded.",
  "duration": 1423,
  "durationHours": 23.7167,
  "endTime": "2026-09-20T23:54:00Z",
  "evidence": [
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.8,
      "continent": "Americas",
      "countryCode": "BR",
      "domain": null,
      "domainCategory": null,
      "id": 459490515,
      "kind": "alert",
      "linkConfidence": 0.8,
      "linkReason": "Same country and date, critical level IODA alert",
      "observedAt": "2026-09-20T23:54:00Z",
      "probeNodeId": null,
      "regionCode": "493",
      "retrievedAt": "2026-09-21T06:00:06.180102",
      "riskTier": 4,
      "signalBaseline": 61,
      "signalLevel": "critical",
      "signalType": "outage",
      "signalValue": 0.8524590163934426,
      "source": "ioda",
      "sourceRef": "ioda:alert:merit-nt:region:493:1789948440",
      "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BR",
      "unSubregion": "South America",
      "upstreamCause": null,
      "upstreamClaim": "IODA detected critical level outage for Ceará",
      "upstreamSeverity": "critical"
    },
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.8,
      "continent": "Americas",
      "countryCode": "BR",
      "domain": null,
      "domainCategory": null,
      "id": 459490514,
      "kind": "alert",
      "linkConfidence": 0.8,
      "linkReason": "Same country and date, critical level IODA alert",
      "observedAt": "2026-09-20T23:53:00Z",
      "probeNodeId": null,
      "regionCode": "486",
      "retrievedAt": "2026-09-21T06:00:06.180102",
      "riskTier": 4,
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      "sourceRef": "ioda:alert:merit-nt:region:486:1789948380",
      "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BR",
      "unSubregion": "South America",
      "upstreamCause": null,
      "upstreamClaim": "IODA detected critical level outage for Distrito Federal",
      "upstreamSeverity": "critical"
    },
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      "asn": null,
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      "confidence": 0.8,
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      "domainCategory": null,
      "id": 459490512,
      "kind": "alert",
      "linkConfidence": 0.8,
      "linkReason": "Same country and date, critical level IODA alert",
      "observedAt": "2026-09-20T23:47:00Z",
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      "regionCode": "493",
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      "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BR",
      "unSubregion": "South America",
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      "upstreamClaim": "IODA detected critical level outage for Ceará",
      "upstreamSeverity": "critical"
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    {
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      "id": 459490511,
      "kind": "alert",
      "linkConfidence": 0.8,
      "linkReason": "Same country and date, critical level IODA alert",
      "observedAt": "2026-09-20T23:42:00Z",
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      "regionCode": "479",
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      "upstreamClaim": "IODA detected critical level outage for Pernambuco",
      "upstreamSeverity": "critical"
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      "id": 459490508,
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      "observedAt": "2026-09-20T23:24:00Z",
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      "retrievedAt": "2026-09-21T06:00:06.180102",
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      "upstreamCause": null,
      "upstreamClaim": "IODA detected critical level outage for Bahia",
      "upstreamSeverity": "critical"
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      "observedAt": "2026-09-20T23:12:00Z",
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      "upstreamCause": null,
      "upstreamClaim": "IODA detected critical level outage for Mato Grosso",
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    },
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      "observedAt": "2026-09-20T23:10:00Z",
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      "observedAt": "2026-09-20T22:56:00Z",
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      "upstreamClaim": "IODA detected critical level outage for Pará",
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