# Sustained censorship in BD (2026-05)

**Country:** 🇧🇩 Bangladesh (BD)
**Date:** 2026-05-06
**Type:** Censorship
**Severity:** CRITICAL
**Status:** confirmed

## Summary

OONI detected 20 days of elevated network interference averaging 63.0% anomaly rate.

## Metrics

- Confidence: 77%
- Measurements: 20
- Anomaly Rate: 63.0%

## Evidence

- **OONI** (measurement): OONI whatsapp: 4/7 measurements anomalous (57.1%)
  - Observed: 2026-05-23
  - Confidence: 73%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=whatsapp&since=2026-05-23&until=2026-05-23&only=anomalies)
- **OONI** (measurement): OONI telegram: 4/7 measurements anomalous (57.1%)
  - Observed: 2026-05-23
  - Confidence: 73%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=telegram&since=2026-05-23&until=2026-05-23&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 4/6 measurements anomalous (66.7%)
  - Observed: 2026-05-20
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=whatsapp&since=2026-05-20&until=2026-05-20&only=anomalies)
- **OONI** (measurement): OONI telegram: 4/6 measurements anomalous (66.7%)
  - Observed: 2026-05-20
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=telegram&since=2026-05-20&until=2026-05-20&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 2/4 measurements anomalous (50.0%)
  - Observed: 2026-05-18
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=whatsapp&since=2026-05-18&until=2026-05-18&only=anomalies)
- **OONI** (measurement): OONI telegram: 2/3 measurements anomalous (66.7%)
  - Observed: 2026-05-18
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=telegram&since=2026-05-18&until=2026-05-18&only=anomalies)
- **OONI** (measurement): OONI telegram: 7/13 measurements anomalous (53.8%)
  - Observed: 2026-05-12
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=telegram&since=2026-05-12&until=2026-05-12&only=anomalies)
- **OONI** (measurement): OONI http_invalid_request_line: 3/6 measurements anomalous (50.0%)
  - Observed: 2026-05-10
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=http_invalid_request_line&since=2026-05-10&until=2026-05-10&only=anomalies)
- **OONI** (measurement): OONI signal: 3/5 measurements anomalous (60.0%)
  - Observed: 2026-05-09
  - Confidence: 74%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=signal&since=2026-05-09&until=2026-05-09&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 4/7 measurements anomalous (57.1%)
  - Observed: 2026-05-09
  - Confidence: 73%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=whatsapp&since=2026-05-09&until=2026-05-09&only=anomalies)
- **OONI** (measurement): OONI telegram: 4/7 measurements anomalous (57.1%)
  - Observed: 2026-05-09
  - Confidence: 73%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=telegram&since=2026-05-09&until=2026-05-09&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 4/7 measurements anomalous (57.1%)
  - Observed: 2026-05-09
  - Confidence: 73%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=facebook_messenger&since=2026-05-09&until=2026-05-09&only=anomalies)
- **OONI** (measurement): OONI signal: 6/7 measurements anomalous (85.7%)
  - Observed: 2026-05-07
  - Confidence: 84%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=signal&since=2026-05-07&until=2026-05-07&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 6/7 measurements anomalous (85.7%)
  - Observed: 2026-05-07
  - Confidence: 84%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=whatsapp&since=2026-05-07&until=2026-05-07&only=anomalies)
- **OONI** (measurement): OONI telegram: 6/7 measurements anomalous (85.7%)
  - Observed: 2026-05-07
  - Confidence: 84%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=telegram&since=2026-05-07&until=2026-05-07&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 6/7 measurements anomalous (85.7%)
  - Observed: 2026-05-07
  - Confidence: 84%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=facebook_messenger&since=2026-05-07&until=2026-05-07&only=anomalies)
- **OONI** (measurement): OONI signal: 6/11 measurements anomalous (54.5%)
  - Observed: 2026-05-06
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=signal&since=2026-05-06&until=2026-05-06&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 6/11 measurements anomalous (54.5%)
  - Observed: 2026-05-06
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=whatsapp&since=2026-05-06&until=2026-05-06&only=anomalies)
- **OONI** (measurement): OONI telegram: 6/11 measurements anomalous (54.5%)
  - Observed: 2026-05-06
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=telegram&since=2026-05-06&until=2026-05-06&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 6/11 measurements anomalous (54.5%)
  - Observed: 2026-05-06
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=BD&test_name=facebook_messenger&since=2026-05-06&until=2026-05-06&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 BD (2026-05) [BD-2026-0208]. Retrieved from https://voidly.ai/incident/BD-2026-0208

---
*Report generated by Voidly Research on 2026-06-21*
*Data licensed under CC BY 4.0*
*Incident ID: BD-2026-0208*
*Permalink: https://voidly.ai/incident/BD-2026-0208*