Sustained censorship in Turkey (2026-05)
Turkey · May 31, 2026 · Ongoing
OONI detected 8 days of elevated network interference averaging 4.0% anomaly rate.
Evidence
4%
Anomaly Rate
8
Measurements
70%
Confidence
What This Means
4% of tests showed anomalies, above the typical 1-3% baseline. This suggests potential network interference.
How We Detected This
Data Sourceooni
ML ModelGradientBoosting v3.3 (LOCO median F1 0.87, honest across 127 countries)
Confidence Score70% certainty of censorship
Detection TimeMay 31, 2026
Corroborating Evidence (8)
Evidence collected from multiple independent sources. Upstream claims shown in quotes are not Voidly assertions.
OONIOpen Observatory of Network Interference8 records
block
"OONI per-ASN: 65/1198 anomalous, 14 confirmed on AS9121"— OONI report
Signal value: 0.05
May 31, 2026
View source →block
"OONI per-ASN: 40/1499 anomalous, 14 confirmed on AS12735"— OONI report
Signal value: 0.03
May 31, 2026
View source →block
"OONI per-ASN: 12/144 anomalous, 6 confirmed on AS12978"— OONI report
Signal value: 0.08
May 31, 2026
View source →block
"OONI per-ASN: 0/100 anomalous, 3 confirmed on AS15897"— OONI report
Signal value: 0.00
May 31, 2026
View source →block
"OONI per-ASN: 338/5903 anomalous, 214 confirmed on AS34984"— OONI report
Signal value: 0.06
May 31, 2026
View source →+ 3 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.
- A confirmed duration — we report the observation window, not a verified start/stop of any block.
- 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. (2026). Sustained censorship in Turkey (2026-05) [TR-2026-0135]. Voidly Global Censorship Index. https://voidly.ai/incident/TR-2026-0135
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