# Sustained censorship in DZ (2026-04)

**Country:** 🇩🇿 Algeria (DZ)
**Date:** 2026-04-14
**Type:** Censorship
**Severity:** CRITICAL
**Status:** confirmed

## Summary

OONI detected 4 days of elevated network interference averaging 50.0% anomaly rate.

## Metrics

- Confidence: 69%
- Measurements: 4
- Anomaly Rate: 50.0%

## Evidence

- **OONI** (measurement): OONI signal: 1/2 measurements anomalous (50.0%)
  - Observed: 2026-04-27
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=signal&since=2026-04-27&until=2026-04-27&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 1/2 measurements anomalous (50.0%)
  - Observed: 2026-04-27
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=facebook_messenger&since=2026-04-27&until=2026-04-27&only=anomalies)
- **OONI** (measurement): OONI web_connectivity for claude.ai: 1/2 measurements anomalous (50.0%)
  - Observed: 2026-04-19
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=web_connectivity&domain=claude.ai&since=2026-04-19&until=2026-04-19)
- **OONI** (measurement): OONI http_header_field_manipulation: 4/8 measurements anomalous (50.0%)
  - Observed: 2026-04-14
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=DZ&test_name=http_header_field_manipulation&since=2026-04-14&until=2026-04-14&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 (2026-04) [DZ-2026-0113]. Retrieved from https://voidly.ai/incident/DZ-2026-0113

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*Report generated by Voidly Research on 2026-06-21*
*Data licensed under CC BY 4.0*
*Incident ID: DZ-2026-0113*
*Permalink: https://voidly.ai/incident/DZ-2026-0113*