# Censorship detected in IR

**Country:** 🇮🇷 Iran (IR)
**Date:** 2026-05-27
**Type:** Censorship
**Severity:** CRITICAL
**Status:** suspected

## Summary

None

## Metrics

- Confidence: 90%
- Measurements: 16
- Anomaly Rate: 100.0%

## Evidence

- **OONI** (measurement): OONI signal: 45/46 measurements anomalous (97.8%)
  - Observed: 2026-05-27
  - Confidence: 89%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=signal&since=2026-05-27&until=2026-05-28&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 35/45 measurements anomalous (77.8%)
  - Observed: 2026-05-27
  - Confidence: 81%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=facebook_messenger&since=2026-05-27&until=2026-05-28&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 45/47 measurements anomalous (95.7%)
  - Observed: 2026-05-27
  - Confidence: 88%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=whatsapp&since=2026-05-27&until=2026-05-28&only=anomalies)
- **OONI** (measurement): OONI telegram: 45/47 measurements anomalous (95.7%)
  - Observed: 2026-05-27
  - Confidence: 88%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=telegram&since=2026-05-27&until=2026-05-28&only=anomalies)
- **OONI** (measurement): OONI signal: 61/62 measurements anomalous (98.4%)
  - Observed: 2026-05-27
  - Confidence: 89%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=signal&since=2026-05-27&until=2026-05-28&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 44/60 measurements anomalous (73.3%)
  - Observed: 2026-05-27
  - Confidence: 79%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=facebook_messenger&since=2026-05-27&until=2026-05-28&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 58/59 measurements anomalous (98.3%)
  - Observed: 2026-05-27
  - Confidence: 89%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=whatsapp&since=2026-05-27&until=2026-05-28&only=anomalies)
- **OONI** (measurement): OONI telegram: 59/60 measurements anomalous (98.3%)
  - Observed: 2026-05-27
  - Confidence: 89%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=telegram&since=2026-05-27&until=2026-05-28&only=anomalies)
- **OONI** (measurement): OONI signal: 35/39 measurements anomalous (89.7%)
  - Observed: 2026-05-27
  - Confidence: 86%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=signal&since=2026-05-27&until=2026-05-28&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 27/43 measurements anomalous (62.8%)
  - Observed: 2026-05-27
  - Confidence: 75%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=facebook_messenger&since=2026-05-27&until=2026-05-28&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 32/37 measurements anomalous (86.5%)
  - Observed: 2026-05-27
  - Confidence: 85%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=whatsapp&since=2026-05-27&until=2026-05-28&only=anomalies)
- **OONI** (measurement): OONI telegram: 36/41 measurements anomalous (87.8%)
  - Observed: 2026-05-27
  - Confidence: 85%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=telegram&since=2026-05-27&until=2026-05-28&only=anomalies)
- **OONI** (measurement): OONI signal: 27/27 measurements anomalous (100.0%)
  - Observed: 2026-05-27
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=signal&since=2026-05-27&until=2026-05-28&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 16/27 measurements anomalous (59.3%)
  - Observed: 2026-05-27
  - Confidence: 74%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=facebook_messenger&since=2026-05-27&until=2026-05-28&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 23/23 measurements anomalous (100.0%)
  - Observed: 2026-05-27
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=whatsapp&since=2026-05-27&until=2026-05-28&only=anomalies)
- **OONI** (measurement): OONI telegram: 26/26 measurements anomalous (100.0%)
  - Observed: 2026-05-27
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=telegram&since=2026-05-27&until=2026-05-28&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). Censorship detected in IR [IR-2026-2267]. Retrieved from https://voidly.ai/incident/IR-2026-2267

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*Report generated by Voidly Research on 2026-08-05*
*Data licensed under CC BY 4.0*
*Incident ID: IR-2026-2267*
*Permalink: https://voidly.ai/incident/IR-2026-2267*