# Censorship detected in CN

**Country:** 🇨🇳 China (CN)
**Date:** 2026-07-31
**Type:** Censorship
**Severity:** CRITICAL
**Status:** suspected

## Summary

None

## Metrics

- Confidence: 90%
- Measurements: 22
- Anomaly Rate: 100.0%

## Evidence

- **OONI** (measurement): OONI signal: 6/6 measurements anomalous (100.0%)
  - Observed: 2026-07-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=signal&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 6/6 measurements anomalous (100.0%)
  - Observed: 2026-07-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=whatsapp&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI telegram: 6/6 measurements anomalous (100.0%)
  - Observed: 2026-07-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=telegram&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 6/6 measurements anomalous (100.0%)
  - Observed: 2026-07-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=facebook_messenger&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI tor: 3/3 measurements anomalous (100.0%)
  - Observed: 2026-07-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=tor&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI web_connectivity: 18413/27422 measurements anomalous (67.1%)
  - Observed: 2026-07-31
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=web_connectivity&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI signal: 2/3 measurements anomalous (66.7%)
  - Observed: 2026-07-31
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=signal&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 2/3 measurements anomalous (66.7%)
  - Observed: 2026-07-31
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=whatsapp&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI telegram: 2/3 measurements anomalous (66.7%)
  - Observed: 2026-07-31
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=telegram&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 2/3 measurements anomalous (66.7%)
  - Observed: 2026-07-31
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=facebook_messenger&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI tor: 2/3 measurements anomalous (66.7%)
  - Observed: 2026-07-31
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=tor&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI web_connectivity: 23526/39534 measurements anomalous (59.5%)
  - Observed: 2026-07-31
  - Confidence: 74%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=web_connectivity&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI signal: 12/12 measurements anomalous (100.0%)
  - Observed: 2026-07-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=signal&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 12/12 measurements anomalous (100.0%)
  - Observed: 2026-07-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=whatsapp&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI telegram: 11/11 measurements anomalous (100.0%)
  - Observed: 2026-07-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=telegram&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 12/12 measurements anomalous (100.0%)
  - Observed: 2026-07-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=facebook_messenger&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI tor: 5/5 measurements anomalous (100.0%)
  - Observed: 2026-07-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=tor&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI signal: 8/8 measurements anomalous (100.0%)
  - Observed: 2026-07-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=signal&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 9/9 measurements anomalous (100.0%)
  - Observed: 2026-07-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=whatsapp&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI telegram: 9/9 measurements anomalous (100.0%)
  - Observed: 2026-07-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=telegram&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 8/8 measurements anomalous (100.0%)
  - Observed: 2026-07-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=facebook_messenger&since=2026-07-31&until=2026-08-01&only=anomalies)
- **OONI** (measurement): OONI tor: 6/6 measurements anomalous (100.0%)
  - Observed: 2026-07-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=CN&test_name=tor&since=2026-07-31&until=2026-08-01&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.
- **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.
- **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 CN [CN-2026-0497]. Retrieved from https://voidly.ai/incident/CN-2026-0497

---
*Report generated by Voidly Research on 2026-08-01*
*Data licensed under CC BY 4.0*
*Incident ID: CN-2026-0497*
*Permalink: https://voidly.ai/incident/CN-2026-0497*