# Censorship detected in TZ

**Country:** 🇹🇿 Tanzania (TZ)
**Date:** 2026-09-17
**Type:** Censorship
**Severity:** CRITICAL
**Status:** suspected

## Summary

None

## Metrics

- Confidence: 90%
- Measurements: 7
- Anomaly Rate: 100.0%

## Evidence

- **OONI** (measurement): OONI signal: 4/5 measurements anomalous (80.0%)
  - Observed: 2026-09-17
  - Confidence: 82%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=TZ&test_name=signal&since=2026-09-17&until=2026-09-18&only=anomalies)
- **OONI** (measurement): OONI telegram: 6/6 measurements anomalous (100.0%)
  - Observed: 2026-09-17
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=TZ&test_name=telegram&since=2026-09-17&until=2026-09-18&only=anomalies)
- **OONI** (measurement): OONI signal: 9/9 measurements anomalous (100.0%)
  - Observed: 2026-09-17
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=TZ&test_name=signal&since=2026-09-17&until=2026-09-18&only=anomalies)
- **OONI** (measurement): OONI telegram: 4/8 measurements anomalous (50.0%)
  - Observed: 2026-09-17
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=TZ&test_name=telegram&since=2026-09-17&until=2026-09-18&only=anomalies)
- **OONI** (measurement): OONI signal: 14/18 measurements anomalous (77.8%)
  - Observed: 2026-09-17
  - Confidence: 81%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=TZ&test_name=signal&since=2026-09-17&until=2026-09-18&only=anomalies)
- **OONI** (measurement): OONI telegram: 11/18 measurements anomalous (61.1%)
  - Observed: 2026-09-17
  - Confidence: 74%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=TZ&test_name=telegram&since=2026-09-17&until=2026-09-18&only=anomalies)
- **OONI** (measurement): OONI signal: 12/14 measurements anomalous (85.7%)
  - Observed: 2026-09-17
  - Confidence: 84%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=TZ&test_name=signal&since=2026-09-17&until=2026-09-18&only=anomalies)
- **CENSOREDPLANET** (http-probe): HTTP blocking (timeout): 2/4 probes blocked (50.0%) for protonvpn.com
  - Observed: 2026-09-17
  - Confidence: 80%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (http-probe): HTTP blocking (timeout): 2/4 probes blocked (50.0%) for telegram.org
  - Observed: 2026-09-17
  - Confidence: 80%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)

## What we cannot say

- **Who caused it** — measurement data alone does not attribute the interference 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, 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.

## Data Sources

ooni, censoredplanet

## Citation

Voidly Research. (2026). Censorship detected in TZ [TZ-2026-0159]. Retrieved from https://voidly.ai/incident/TZ-2026-0159

---
*Report generated by Voidly Research on 2026-09-19*
*Data licensed under CC BY 4.0*
*Incident ID: TZ-2026-0159*
*Permalink: https://voidly.ai/incident/TZ-2026-0159*