Active Incident
Confirmed: sustained censorship in Iran (2022-09)
Iran · September 13, 2022 · 2 days
OONI detected 3 days of elevated network interference averaging 93.0% anomaly rate.
Evidence
93%
Anomaly Rate
3
Measurements
75%
Confidence
What This Means
93% of 3 network tests from Iran failed to reach these services. Global baseline failure rate is typically 1-3%. This 90+ percentage point difference strongly indicates intentional blocking.
How We Detected This
Data Sourceooni
ML ModelGradientBoosting v3.3 (LOCO median F1 0.87, honest across 127 countries)
Confidence Score75% certainty of censorship
Detection TimeSeptember 13, 2022
Corroborating Evidence (18)
Evidence collected from multiple independent sources. Upstream claims shown in quotes are not Voidly assertions.
OONIOpen Observatory of Network Interference18 records
block
"Mahsa Amini protests internet shutdown"— OONI report
Signal value: 0.94
Sep 30, 2022
View source →block
"Mahsa Amini protests internet shutdown"— OONI report
Signal value: 0.91
Sep 29, 2022
View source →block
"Mahsa Amini protests internet shutdown"— OONI report
Signal value: 0.94
Sep 28, 2022
View source →block
"Mahsa Amini protests internet shutdown"— OONI report
Signal value: 0.93
Sep 27, 2022
View source →block
"Mahsa Amini protests internet shutdown"— OONI report
Signal value: 0.94
Sep 26, 2022
View source →+ 13 more OONI records
What we cannot say
- Who caused it — measurement data alone does not attribute this to any government, ISP, or other actor.
- Intent — anomalous or unreachable measurements indicate interference, not a stated motive or a deliberate-vs-incidental determination.
- Which networks — no specific ASN/ISP is identified for this incident.
- The mechanism — we cannot state whether this was DNS tampering, TLS/SNI reset, an HTTP blockpage, throttling, or an infrastructure outage.
- Sub-national scope — measurement is aggregated at the country level; we cannot localize to a province, city, or network segment.
- Independent corroboration — this rests on a single source; treat it as a single-source signal, not a multi-source confirmation.
Cite This Incident
Voidly Research. (2022). Confirmed: sustained censorship in Iran (2022-09) [IR-2022-0005]. Voidly Global Censorship Index. https://voidly.ai/incident/IR-2022-0005
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