# Sustained censorship in DZ (2026-09)

**Country:** 🇩🇿 Algeria (DZ)
**Date:** 2026-09-05
**Type:** Censorship
**Severity:** CRITICAL
**Status:** confirmed

## Summary

OONI detected 3 days of elevated network interference averaging 83.3% anomaly rate.

## Metrics

- Confidence: 72%
- Measurements: 3
- Anomaly Rate: 83.3%

## Evidence

- **OONI** (measurement): OONI web_connectivity for chat.openai.com: 1/1 measurements anomalous (100.0%)
  - Observed: 2026-09-12
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=web_connectivity&domain=chat.openai.com&since=2026-09-12&until=2026-09-13)
- **OONI** (measurement): OONI facebook_messenger: 5/10 measurements anomalous (50.0%)
  - Observed: 2026-09-10
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=facebook_messenger&since=2026-09-10&until=2026-09-11&only=anomalies)
- **OONI** (measurement): OONI http_header_field_manipulation: 5/10 measurements anomalous (50.0%)
  - Observed: 2026-09-10
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=http_header_field_manipulation&since=2026-09-10&until=2026-09-11&only=anomalies)
- **OONI** (measurement): OONI signal: 5/9 measurements anomalous (55.6%)
  - Observed: 2026-09-09
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=signal&since=2026-09-09&until=2026-09-10&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 7/12 measurements anomalous (58.3%)
  - Observed: 2026-09-08
  - Confidence: 73%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=facebook_messenger&since=2026-09-08&until=2026-09-09&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 4/7 measurements anomalous (57.1%)
  - Observed: 2026-09-08
  - Confidence: 73%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=facebook_messenger&since=2026-09-08&until=2026-09-09&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 2/4 measurements anomalous (50.0%)
  - Observed: 2026-09-08
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=facebook_messenger&since=2026-09-08&until=2026-09-09&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 10/16 measurements anomalous (62.5%)
  - Observed: 2026-09-07
  - Confidence: 75%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=facebook_messenger&since=2026-09-07&until=2026-09-08&only=anomalies)
- **OONI** (measurement): OONI web_connectivity for gemini.google.com: 1/1 measurements anomalous (100.0%)
  - Observed: 2026-09-07
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=web_connectivity&domain=gemini.google.com&since=2026-09-07&until=2026-09-08)
- **OONI** (measurement): OONI facebook_messenger: 8/16 measurements anomalous (50.0%)
  - Observed: 2026-09-06
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=facebook_messenger&since=2026-09-06&until=2026-09-07&only=anomalies)
- **OONI** (measurement): OONI http_header_field_manipulation: 3/6 measurements anomalous (50.0%)
  - Observed: 2026-09-06
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=http_header_field_manipulation&since=2026-09-06&until=2026-09-07&only=anomalies)
- **OONI** (measurement): OONI web_connectivity for openai.com: 1/2 measurements anomalous (50.0%)
  - Observed: 2026-09-05
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=web_connectivity&domain=openai.com&since=2026-09-05&until=2026-09-06)
- **OONI** (measurement): OONI facebook_messenger: 1/2 measurements anomalous (50.0%)
  - Observed: 2026-09-04
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=facebook_messenger&since=2026-09-04&until=2026-09-05&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 5/10 measurements anomalous (50.0%)
  - Observed: 2026-09-03
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=facebook_messenger&since=2026-09-03&until=2026-09-04&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 4/6 measurements anomalous (66.7%)
  - Observed: 2026-09-02
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=whatsapp&since=2026-09-02&until=2026-09-03&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 3/6 measurements anomalous (50.0%)
  - Observed: 2026-09-02
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=facebook_messenger&since=2026-09-02&until=2026-09-03&only=anomalies)

## 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.
- **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.

## Data Sources

ooni

## Citation

Voidly Research. (2026). Sustained censorship in DZ (2026-09) [DZ-2026-0964]. Retrieved from https://voidly.ai/incident/DZ-2026-0964

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*Report generated by Voidly Research on 2026-09-20*
*Data licensed under CC BY 4.0*
*Incident ID: DZ-2026-0964*
*Permalink: https://voidly.ai/incident/DZ-2026-0964*