Active Incident
Confirmed: election restrictions
Tanzania · October 27, 2020 · 5 days
OONI detected censorship pattern in Tanzania. Election restrictions. Anomaly rate: 78.5%
Evidence
82%
Anomaly Rate
330
Measurements
90%
Confidence
What This Means
82% of 330 network tests from Tanzania failed to reach these services. Global baseline failure rate is typically 1-3%. This 79+ 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 Score90% certainty of censorship
Detection TimeOctober 27, 2020
Corroborating Evidence (5)
Evidence collected from multiple independent sources. Upstream claims shown in quotes are not Voidly assertions.
OONIOpen Observatory of Network Interference5 records
block
"Election restrictions"— OONI report
Signal value: 0.82
Oct 28, 2020
View source →interference
"Web connectivity anomalies detected. 76 measurements with 81.6% anomaly rate."— OONI report
Signal value: 0.82
Oct 28, 2020
View source →block
"Election restrictions"— OONI report
Signal value: 0.78
Oct 27, 2020
View source →interference
"Web connectivity anomalies detected. 172 measurements with 78.5% anomaly rate."— OONI report
Signal value: 0.78
Oct 27, 2020
View source →interference
"Web connectivity anomalies detected. 82 measurements with 64.6% anomaly rate."— OONI report
Signal value: 0.65
Oct 27, 2020
View source →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. (2020). Confirmed: election restrictions [TZ-2020-0001]. Voidly Global Censorship Index. https://voidly.ai/incident/TZ-2020-0001