voidly
Data

Incident record · Bulgaria

Internet connectivity disruption in Bulgaria

Type
disruption
Status
active
Severity
critical
Inspect evidence Cite this incident

Source summary

IODA detected significant connectivity drop in Bulgaria. 22 critical alerts recorded.

Open incident JSON
Reported anomaly rate
67.5%

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

Source measurement count
22

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

Incident confidence
75%

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

22 linked records.

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

Linked observation dates

22 dated · 0 without a verified timezone
IODA22 linked records
May 3, 2026 · 20:50 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.

IODA22 records · open evidence

outage · critical

ioda:alert:ping-slash24:region:371:1777841400

IODA detected critical level outage for Veliko Tarnovo

Upstream claim · IODA
Signal value
0.629902
Signal baseline
408
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56053029,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "371",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 408,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.6299019607843137,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:371:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Veliko Tarnovo",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:367:1777841400

IODA detected critical level outage for Pernik

Upstream claim · IODA
Signal value
0.688742
Signal baseline
151
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56053178,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "367",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 151,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.6887417218543046,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:367:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Pernik",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:380:1777841400

IODA detected critical level outage for Shumen

Upstream claim · IODA
Signal value
0.629139
Signal baseline
151
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56053231,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "380",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 151,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.6291390728476821,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:380:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Shumen",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:372:1777841400

IODA detected critical level outage for Montana

Upstream claim · IODA
Signal value
0.798165
Signal baseline
109
Evidence confidence
80%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.8,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56053239,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "372",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 109,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.7981651376146789,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:372:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Montana",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:384:1777841400

IODA detected critical level outage for Ruse

Upstream claim · IODA
Signal value
0.677596
Signal baseline
183
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56053264,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "384",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 183,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.6775956284153005,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:384:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Ruse",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:361:1777841400

IODA detected critical level outage for Pazardzhik

Upstream claim · IODA
Signal value
0.695364
Signal baseline
151
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56053423,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "361",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 151,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.695364238410596,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:361:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Pazardzhik",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:366:1777841400

IODA detected critical level outage for Sofia

Upstream claim · IODA
Signal value
0.683871
Signal baseline
310
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56053656,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "366",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 310,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.6838709677419355,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:366:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Sofia",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:360:1777841400

IODA detected critical level outage for Stara Zagora

Upstream claim · IODA
Signal value
0.709497
Signal baseline
179
Evidence confidence
80%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.8,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56053706,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "360",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 179,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.7094972067039106,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:360:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Stara Zagora",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:383:1777841400

IODA detected critical level outage for Silistra

Upstream claim · IODA
Signal value
0.777778
Signal baseline
63
Evidence confidence
80%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.8,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56053825,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "383",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 63,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.7777777777777778,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:383:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Silistra",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:378:1777841400

IODA detected critical level outage for Razgrad

Upstream claim · IODA
Signal value
0.647059
Signal baseline
68
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56053845,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "378",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 68,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.6470588235294118,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:378:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Razgrad",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:363:1777841400

IODA detected critical level outage for Smolyan

Upstream claim · IODA
Signal value
0.517241
Signal baseline
58
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56053924,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "363",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 58,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.5172413793103449,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:363:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Smolyan",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:369:1777841400

IODA detected critical level outage for Lovech

Upstream claim · IODA
Signal value
0.711538
Signal baseline
104
Evidence confidence
80%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.8,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56053993,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "369",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 104,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.7115384615384616,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:369:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Lovech",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:374:1777841400

IODA detected critical level outage for Kyustendil

Upstream claim · IODA
Signal value
0.671053
Signal baseline
152
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56054049,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "374",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 152,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.6710526315789473,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:374:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Kyustendil",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:370:1777841400

IODA detected critical level outage for Pleven

Upstream claim · IODA
Signal value
0.616601
Signal baseline
253
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56054244,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "370",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 253,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.616600790513834,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:370:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Pleven",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:358:1777841400

IODA detected critical level outage for Sliven

Upstream claim · IODA
Signal value
0.695364
Signal baseline
151
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56054267,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "358",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 151,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.695364238410596,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:358:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Sliven",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:381:1777841400

IODA detected critical level outage for Dobrich

Upstream claim · IODA
Signal value
0.645161
Signal baseline
93
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56054323,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "381",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 93,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.6451612903225806,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:381:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Dobrich",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:368:1777841400

IODA detected critical level outage for Gabrovo

Upstream claim · IODA
Signal value
0.737705
Signal baseline
183
Evidence confidence
80%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.8,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56054422,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "368",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 183,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.7377049180327869,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:368:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Gabrovo",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:376:1777841400

IODA detected critical level outage for Burgas

Upstream claim · IODA
Signal value
0.684524
Signal baseline
504
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56054671,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "376",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 504,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.6845238095238095,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:376:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Burgas",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:362:1777841400

IODA detected critical level outage for Plovdiv

Upstream claim · IODA
Signal value
0.614995
Signal baseline
987
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56054711,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "362",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 987,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.6149949341438703,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:362:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Plovdiv",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:375:1777841400

IODA detected critical level outage for Vidin

Upstream claim · IODA
Signal value
0.626667
Signal baseline
75
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56054774,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "375",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 75,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.6266666666666667,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:375:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Vidin",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:359:1777841400

IODA detected critical level outage for Haskovo

Upstream claim · IODA
Signal value
0.684492
Signal baseline
187
Evidence confidence
77%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.77,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56054789,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "359",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 187,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.6844919786096256,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:359:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Haskovo",
  "upstreamSeverity": "critical"
}

outage · critical

ioda:alert:ping-slash24:region:364:1777841400

IODA detected critical level outage for Kardzhali

Upstream claim · IODA
Signal value
0.71134
Signal baseline
97
Evidence confidence
80%
Link confidence
80%

Why it is linked: Same country and date, critical level IODA alert

Retrieved
2026-05-04 00:00:10.054515 · timezone unspecified
Open upstream source
Complete evidence record
{
  "asn": null,
  "blockingMethod": null,
  "confidence": 0.8,
  "continent": "Europe",
  "countryCode": "BG",
  "domain": null,
  "domainCategory": null,
  "id": 56054814,
  "kind": "alert",
  "linkConfidence": 0.8,
  "linkReason": "Same country and date, critical level IODA alert",
  "observedAt": "2026-05-03T20:50:00Z",
  "probeNodeId": null,
  "regionCode": "364",
  "retrievedAt": "2026-05-04T00:00:10.054515",
  "riskTier": 3,
  "signalBaseline": 97,
  "signalLevel": "critical",
  "signalType": "outage",
  "signalValue": 0.711340206185567,
  "source": "ioda",
  "sourceRef": "ioda:alert:ping-slash24:region:364:1777841400",
  "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
  "unSubregion": "Eastern Europe",
  "upstreamCause": null,
  "upstreamClaim": "IODA detected critical level outage for Kardzhali",
  "upstreamSeverity": "critical"
}
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: ioda",
  "evidenceCount": 22,
  "level": "low",
  "score": 0.65,
  "sourceCount": 1,
  "sources": [
    "ioda"
  ]
}

Declared incident sources: IODA.

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

No services named.

Incident mechanism

Infrastructure outage

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": 22,
      "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": []
}
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.

A confirmed duration is not supplied. 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
with you.

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

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

The record over time.

Created
2026-05-04 00:00:11.485768 · timezone unspecified
Last updated
2026-05-04 00:00:11.485768 · timezone unspecified
Revision
1
Revision history and original fields

Revision-history array unavailable.

Canonical ID: BG-2026-0027. Source ID: BG-2026-0027. Hash ID: 74a69fd59ce3.

Additional source duration field: 0 hours. It is retained separately from the minutes field and does not establish a verified event duration.

Complete source JSON
{
  "affectedAsns": [],
  "affectedDomains": [],
  "affectedServices": [],
  "anomalyRate": 0.6751724472962273,
  "attribution": {
    "asns_attributed": 0,
    "domains_attributed": 0,
    "methods": [
      {
        "evidence_count": 22,
        "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": 22,
    "level": "low",
    "score": 0.65,
    "sourceCount": 1,
    "sources": [
      "ioda"
    ]
  },
  "country": "BG",
  "countryName": "Bulgaria",
  "createdAt": "2026-05-04T00:00:11.485768",
  "description": "IODA detected significant connectivity drop in Bulgaria. 22 critical alerts recorded.",
  "duration": null,
  "durationHours": 0,
  "endTime": null,
  "evidence": [
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.77,
      "continent": "Europe",
      "countryCode": "BG",
      "domain": null,
      "domainCategory": null,
      "id": 56053029,
      "kind": "alert",
      "linkConfidence": 0.8,
      "linkReason": "Same country and date, critical level IODA alert",
      "observedAt": "2026-05-03T20:50:00Z",
      "probeNodeId": null,
      "regionCode": "371",
      "retrievedAt": "2026-05-04T00:00:10.054515",
      "riskTier": 3,
      "signalBaseline": 408,
      "signalLevel": "critical",
      "signalType": "outage",
      "signalValue": 0.6299019607843137,
      "source": "ioda",
      "sourceRef": "ioda:alert:ping-slash24:region:371:1777841400",
      "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
      "unSubregion": "Eastern Europe",
      "upstreamCause": null,
      "upstreamClaim": "IODA detected critical level outage for Veliko Tarnovo",
      "upstreamSeverity": "critical"
    },
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.77,
      "continent": "Europe",
      "countryCode": "BG",
      "domain": null,
      "domainCategory": null,
      "id": 56053178,
      "kind": "alert",
      "linkConfidence": 0.8,
      "linkReason": "Same country and date, critical level IODA alert",
      "observedAt": "2026-05-03T20:50:00Z",
      "probeNodeId": null,
      "regionCode": "367",
      "retrievedAt": "2026-05-04T00:00:10.054515",
      "riskTier": 3,
      "signalBaseline": 151,
      "signalLevel": "critical",
      "signalType": "outage",
      "signalValue": 0.6887417218543046,
      "source": "ioda",
      "sourceRef": "ioda:alert:ping-slash24:region:367:1777841400",
      "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
      "unSubregion": "Eastern Europe",
      "upstreamCause": null,
      "upstreamClaim": "IODA detected critical level outage for Pernik",
      "upstreamSeverity": "critical"
    },
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.77,
      "continent": "Europe",
      "countryCode": "BG",
      "domain": null,
      "domainCategory": null,
      "id": 56053231,
      "kind": "alert",
      "linkConfidence": 0.8,
      "linkReason": "Same country and date, critical level IODA alert",
      "observedAt": "2026-05-03T20:50:00Z",
      "probeNodeId": null,
      "regionCode": "380",
      "retrievedAt": "2026-05-04T00:00:10.054515",
      "riskTier": 3,
      "signalBaseline": 151,
      "signalLevel": "critical",
      "signalType": "outage",
      "signalValue": 0.6291390728476821,
      "source": "ioda",
      "sourceRef": "ioda:alert:ping-slash24:region:380:1777841400",
      "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
      "unSubregion": "Eastern Europe",
      "upstreamCause": null,
      "upstreamClaim": "IODA detected critical level outage for Shumen",
      "upstreamSeverity": "critical"
    },
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.8,
      "continent": "Europe",
      "countryCode": "BG",
      "domain": null,
      "domainCategory": null,
      "id": 56053239,
      "kind": "alert",
      "linkConfidence": 0.8,
      "linkReason": "Same country and date, critical level IODA alert",
      "observedAt": "2026-05-03T20:50:00Z",
      "probeNodeId": null,
      "regionCode": "372",
      "retrievedAt": "2026-05-04T00:00:10.054515",
      "riskTier": 3,
      "signalBaseline": 109,
      "signalLevel": "critical",
      "signalType": "outage",
      "signalValue": 0.7981651376146789,
      "source": "ioda",
      "sourceRef": "ioda:alert:ping-slash24:region:372:1777841400",
      "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
      "unSubregion": "Eastern Europe",
      "upstreamCause": null,
      "upstreamClaim": "IODA detected critical level outage for Montana",
      "upstreamSeverity": "critical"
    },
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.77,
      "continent": "Europe",
      "countryCode": "BG",
      "domain": null,
      "domainCategory": null,
      "id": 56053264,
      "kind": "alert",
      "linkConfidence": 0.8,
      "linkReason": "Same country and date, critical level IODA alert",
      "observedAt": "2026-05-03T20:50:00Z",
      "probeNodeId": null,
      "regionCode": "384",
      "retrievedAt": "2026-05-04T00:00:10.054515",
      "riskTier": 3,
      "signalBaseline": 183,
      "signalLevel": "critical",
      "signalType": "outage",
      "signalValue": 0.6775956284153005,
      "source": "ioda",
      "sourceRef": "ioda:alert:ping-slash24:region:384:1777841400",
      "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
      "unSubregion": "Eastern Europe",
      "upstreamCause": null,
      "upstreamClaim": "IODA detected critical level outage for Ruse",
      "upstreamSeverity": "critical"
    },
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.77,
      "continent": "Europe",
      "countryCode": "BG",
      "domain": null,
      "domainCategory": null,
      "id": 56053423,
      "kind": "alert",
      "linkConfidence": 0.8,
      "linkReason": "Same country and date, critical level IODA alert",
      "observedAt": "2026-05-03T20:50:00Z",
      "probeNodeId": null,
      "regionCode": "361",
      "retrievedAt": "2026-05-04T00:00:10.054515",
      "riskTier": 3,
      "signalBaseline": 151,
      "signalLevel": "critical",
      "signalType": "outage",
      "signalValue": 0.695364238410596,
      "source": "ioda",
      "sourceRef": "ioda:alert:ping-slash24:region:361:1777841400",
      "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
      "unSubregion": "Eastern Europe",
      "upstreamCause": null,
      "upstreamClaim": "IODA detected critical level outage for Pazardzhik",
      "upstreamSeverity": "critical"
    },
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.77,
      "continent": "Europe",
      "countryCode": "BG",
      "domain": null,
      "domainCategory": null,
      "id": 56053656,
      "kind": "alert",
      "linkConfidence": 0.8,
      "linkReason": "Same country and date, critical level IODA alert",
      "observedAt": "2026-05-03T20:50:00Z",
      "probeNodeId": null,
      "regionCode": "366",
      "retrievedAt": "2026-05-04T00:00:10.054515",
      "riskTier": 3,
      "signalBaseline": 310,
      "signalLevel": "critical",
      "signalType": "outage",
      "signalValue": 0.6838709677419355,
      "source": "ioda",
      "sourceRef": "ioda:alert:ping-slash24:region:366:1777841400",
      "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
      "unSubregion": "Eastern Europe",
      "upstreamCause": null,
      "upstreamClaim": "IODA detected critical level outage for Sofia",
      "upstreamSeverity": "critical"
    },
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.8,
      "continent": "Europe",
      "countryCode": "BG",
      "domain": null,
      "domainCategory": null,
      "id": 56053706,
      "kind": "alert",
      "linkConfidence": 0.8,
      "linkReason": "Same country and date, critical level IODA alert",
      "observedAt": "2026-05-03T20:50:00Z",
      "probeNodeId": null,
      "regionCode": "360",
      "retrievedAt": "2026-05-04T00:00:10.054515",
      "riskTier": 3,
      "signalBaseline": 179,
      "signalLevel": "critical",
      "signalType": "outage",
      "signalValue": 0.7094972067039106,
      "source": "ioda",
      "sourceRef": "ioda:alert:ping-slash24:region:360:1777841400",
      "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
      "unSubregion": "Eastern Europe",
      "upstreamCause": null,
      "upstreamClaim": "IODA detected critical level outage for Stara Zagora",
      "upstreamSeverity": "critical"
    },
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.8,
      "continent": "Europe",
      "countryCode": "BG",
      "domain": null,
      "domainCategory": null,
      "id": 56053825,
      "kind": "alert",
      "linkConfidence": 0.8,
      "linkReason": "Same country and date, critical level IODA alert",
      "observedAt": "2026-05-03T20:50:00Z",
      "probeNodeId": null,
      "regionCode": "383",
      "retrievedAt": "2026-05-04T00:00:10.054515",
      "riskTier": 3,
      "signalBaseline": 63,
      "signalLevel": "critical",
      "signalType": "outage",
      "signalValue": 0.7777777777777778,
      "source": "ioda",
      "sourceRef": "ioda:alert:ping-slash24:region:383:1777841400",
      "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
      "unSubregion": "Eastern Europe",
      "upstreamCause": null,
      "upstreamClaim": "IODA detected critical level outage for Silistra",
      "upstreamSeverity": "critical"
    },
    {
      "asn": null,
      "blockingMethod": null,
      "confidence": 0.77,
      "continent": "Europe",
      "countryCode": "BG",
      "domain": null,
      "domainCategory": null,
      "id": 56053845,
      "kind": "alert",
      "linkConfidence": 0.8,
      "linkReason": "Same country and date, critical level IODA alert",
      "observedAt": "2026-05-03T20:50:00Z",
      "probeNodeId": null,
      "regionCode": "378",
      "retrievedAt": "2026-05-04T00:00:10.054515",
      "riskTier": 3,
      "signalBaseline": 68,
      "signalLevel": "critical",
      "signalType": "outage",
      "signalValue": 0.6470588235294118,
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      "upstreamClaim": "IODA detected critical level outage for Lovech",
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      "upstreamClaim": "IODA detected critical level outage for Pleven",
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      "upstreamClaim": "IODA detected critical level outage for Sliven",
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      "observedAt": "2026-05-03T20:50:00Z",
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      "upstreamClaim": "IODA detected critical level outage for Dobrich",
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      "continent": "Europe",
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      "linkReason": "Same country and date, critical level IODA alert",
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      "upstreamClaim": "IODA detected critical level outage for Gabrovo",
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      "continent": "Europe",
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      "id": 56054671,
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      "linkReason": "Same country and date, critical level IODA alert",
      "observedAt": "2026-05-03T20:50:00Z",
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      "regionCode": "376",
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      "upstreamClaim": "IODA detected critical level outage for Burgas",
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    {
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      "upstreamClaim": "IODA detected critical level outage for Plovdiv",
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      "upstreamClaim": "IODA detected critical level outage for Vidin",
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      "upstreamClaim": "IODA detected critical level outage for Haskovo",
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      "linkReason": "Same country and date, critical level IODA alert",
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      "sourceUrl": "https://ioda.inetintel.cc.gatech.edu/country/BG",
      "unSubregion": "Eastern Europe",
      "upstreamCause": null,
      "upstreamClaim": "IODA detected critical level outage for Kardzhali",
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  "evidenceCount": 22,
  "evidenceSourceBreakdown": {
    "ioda": 22
  },
  "evidenceSpan": {
    "earliest": "2026-05-03T20:50:00Z",
    "latest": "2026-05-03T20:50:00Z"
  },
  "flag": "🇧🇬",
  "generated_at_utc": "2026-09-20T22:32:38.473044Z",
  "hashId": "74a69fd59ce3",
  "id": "BG-2026-0027",
  "incidentType": "disruption",
  "measurementCount": 22,
  "mechanism": "Infrastructure outage",
  "readableId": "BG-2026-0027",
  "reportUrl": "https://api.voidly.ai/data/incidents/74a69fd59ce3/report?format=markdown",
  "revision": 1,
  "severity": "critical",
  "severityGrade": "B",
  "sources": [
    "ioda"
  ],
  "startTime": "2026-05-03T20:50:00Z",
  "status": "active",
  "title": "Internet connectivity disruption in Bulgaria",
  "updatedAt": "2026-05-04T00:00:11.485768"
}
All Bulgaria incidents
Sep 20, 2026 · disruptionInternet connectivity disruption in BulgariaSep 19, 2026 · disruptionInternet connectivity disruption in BulgariaSep 17, 2026 · disruptionInternet connectivity disruption in BulgariaSep 16, 2026 · disruptionInternet connectivity disruption in BulgariaSep 15, 2026 · disruptionInternet connectivity disruption in BulgariaSep 9, 2026 · disruptionInternet connectivity disruption in Bulgaria
More with the same mechanism · Infrastructure outage
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Related records come from up to 100 recent records in the same country. They do not establish a causal connection.

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