# Sustained censorship in VN (2026-03)

**Country:** 🇻🇳 Vietnam (VN)
**Date:** 2026-03-01
**Type:** Censorship
**Severity:** CRITICAL
**Status:** confirmed

## Summary

OONI detected 61 days of elevated network interference averaging 67.1% anomaly rate.

## Metrics

- Confidence: 77%
- Measurements: 61
- Anomaly Rate: 67.1%

## Evidence

- **OONI** (measurement): OONI tor: 4/7 measurements anomalous (57.1%)
  - Observed: 2026-03-29
  - Confidence: 73%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-29&until=2026-03-29&only=anomalies)
- **OONI** (measurement): OONI tor: 12/21 measurements anomalous (57.1%)
  - Observed: 2026-03-27
  - Confidence: 73%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-27&until=2026-03-27&only=anomalies)
- **OONI** (measurement): OONI tor: 12/24 measurements anomalous (50.0%)
  - Observed: 2026-03-27
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-27&until=2026-03-27&only=anomalies)
- **OONI** (measurement): OONI tor: 12/16 measurements anomalous (75.0%)
  - Observed: 2026-03-17
  - Confidence: 80%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-17&until=2026-03-17&only=anomalies)
- **OONI** (measurement): OONI tor: 10/20 measurements anomalous (50.0%)
  - Observed: 2026-03-17
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-17&until=2026-03-17&only=anomalies)
- **OONI** (measurement): OONI tor: 7/14 measurements anomalous (50.0%)
  - Observed: 2026-03-16
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-16&until=2026-03-16&only=anomalies)
- **OONI** (measurement): OONI tor: 12/16 measurements anomalous (75.0%)
  - Observed: 2026-03-16
  - Confidence: 80%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-16&until=2026-03-16&only=anomalies)
- **OONI** (measurement): OONI tor: 13/23 measurements anomalous (56.5%)
  - Observed: 2026-03-16
  - Confidence: 73%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-16&until=2026-03-16&only=anomalies)
- **OONI** (measurement): OONI tor: 14/22 measurements anomalous (63.6%)
  - Observed: 2026-03-16
  - Confidence: 75%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-16&until=2026-03-16&only=anomalies)
- **OONI** (measurement): OONI tor: 8/10 measurements anomalous (80.0%)
  - Observed: 2026-03-15
  - Confidence: 82%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-15&until=2026-03-15&only=anomalies)
- **OONI** (measurement): OONI tor: 13/15 measurements anomalous (86.7%)
  - Observed: 2026-03-15
  - Confidence: 85%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-15&until=2026-03-15&only=anomalies)
- **OONI** (measurement): OONI tor: 11/16 measurements anomalous (68.8%)
  - Observed: 2026-03-15
  - Confidence: 78%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-15&until=2026-03-15&only=anomalies)
- **OONI** (measurement): OONI tor: 7/10 measurements anomalous (70.0%)
  - Observed: 2026-03-15
  - Confidence: 78%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-15&until=2026-03-15&only=anomalies)
- **OONI** (measurement): OONI tor: 6/6 measurements anomalous (100.0%)
  - Observed: 2026-03-14
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-14&until=2026-03-14&only=anomalies)
- **OONI** (measurement): OONI tor: 12/18 measurements anomalous (66.7%)
  - Observed: 2026-03-14
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-14&until=2026-03-14&only=anomalies)
- **OONI** (measurement): OONI tor: 10/16 measurements anomalous (62.5%)
  - Observed: 2026-03-14
  - Confidence: 75%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-14&until=2026-03-14&only=anomalies)
- **OONI** (measurement): OONI tor: 7/13 measurements anomalous (53.8%)
  - Observed: 2026-03-14
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-14&until=2026-03-14&only=anomalies)
- **OONI** (measurement): OONI tor: 4/8 measurements anomalous (50.0%)
  - Observed: 2026-03-13
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-13&until=2026-03-13&only=anomalies)
- **OONI** (measurement): OONI tor: 11/19 measurements anomalous (57.9%)
  - Observed: 2026-03-13
  - Confidence: 73%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-13&until=2026-03-13&only=anomalies)
- **OONI** (measurement): OONI tor: 10/18 measurements anomalous (55.6%)
  - Observed: 2026-03-13
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-13&until=2026-03-13&only=anomalies)
- **OONI** (measurement): OONI tor: 5/6 measurements anomalous (83.3%)
  - Observed: 2026-03-12
  - Confidence: 83%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-12&until=2026-03-12&only=anomalies)
- **OONI** (measurement): OONI tor: 12/14 measurements anomalous (85.7%)
  - Observed: 2026-03-12
  - Confidence: 84%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-12&until=2026-03-12&only=anomalies)
- **OONI** (measurement): OONI tor: 13/19 measurements anomalous (68.4%)
  - Observed: 2026-03-12
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-12&until=2026-03-12&only=anomalies)
- **OONI** (measurement): OONI tor: 2/2 measurements anomalous (100.0%)
  - Observed: 2026-03-11
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-11&until=2026-03-11&only=anomalies)
- **OONI** (measurement): OONI tor: 2/2 measurements anomalous (100.0%)
  - Observed: 2026-03-11
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-11&until=2026-03-11&only=anomalies)
- **OONI** (measurement): OONI tor: 12/20 measurements anomalous (60.0%)
  - Observed: 2026-03-11
  - Confidence: 74%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-11&until=2026-03-11&only=anomalies)
- **OONI** (measurement): OONI tor: 10/15 measurements anomalous (66.7%)
  - Observed: 2026-03-11
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-11&until=2026-03-11&only=anomalies)
- **OONI** (measurement): OONI tor: 7/7 measurements anomalous (100.0%)
  - Observed: 2026-03-10
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-10&until=2026-03-10&only=anomalies)
- **OONI** (measurement): OONI tor: 8/14 measurements anomalous (57.1%)
  - Observed: 2026-03-10
  - Confidence: 73%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-10&until=2026-03-10&only=anomalies)
- **OONI** (measurement): OONI tor: 9/15 measurements anomalous (60.0%)
  - Observed: 2026-03-10
  - Confidence: 74%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-10&until=2026-03-10&only=anomalies)
- **OONI** (measurement): OONI tor: 6/11 measurements anomalous (54.5%)
  - Observed: 2026-03-09
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-09&until=2026-03-09&only=anomalies)
- **OONI** (measurement): OONI tor: 8/9 measurements anomalous (88.9%)
  - Observed: 2026-03-09
  - Confidence: 86%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-09&until=2026-03-09&only=anomalies)
- **OONI** (measurement): OONI tor: 12/18 measurements anomalous (66.7%)
  - Observed: 2026-03-09
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-09&until=2026-03-09&only=anomalies)
- **OONI** (measurement): OONI tor: 8/15 measurements anomalous (53.3%)
  - Observed: 2026-03-09
  - Confidence: 71%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-09&until=2026-03-09&only=anomalies)
- **OONI** (measurement): OONI tor: 6/11 measurements anomalous (54.5%)
  - Observed: 2026-03-08
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-08&until=2026-03-08&only=anomalies)
- **OONI** (measurement): OONI tor: 7/8 measurements anomalous (87.5%)
  - Observed: 2026-03-08
  - Confidence: 85%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-08&until=2026-03-08&only=anomalies)
- **OONI** (measurement): OONI tor: 8/12 measurements anomalous (66.7%)
  - Observed: 2026-03-08
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-08&until=2026-03-08&only=anomalies)
- **OONI** (measurement): OONI tor: 7/13 measurements anomalous (53.8%)
  - Observed: 2026-03-08
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-08&until=2026-03-08&only=anomalies)
- **OONI** (measurement): OONI tor: 8/12 measurements anomalous (66.7%)
  - Observed: 2026-03-07
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-07&until=2026-03-07&only=anomalies)
- **OONI** (measurement): OONI tor: 10/16 measurements anomalous (62.5%)
  - Observed: 2026-03-07
  - Confidence: 75%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-07&until=2026-03-07&only=anomalies)
- **OONI** (measurement): OONI tor: 11/20 measurements anomalous (55.0%)
  - Observed: 2026-03-07
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-07&until=2026-03-07&only=anomalies)
- **OONI** (measurement): OONI tor: 9/14 measurements anomalous (64.3%)
  - Observed: 2026-03-06
  - Confidence: 76%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-06&until=2026-03-06&only=anomalies)
- **OONI** (measurement): OONI tor: 11/19 measurements anomalous (57.9%)
  - Observed: 2026-03-06
  - Confidence: 73%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-06&until=2026-03-06&only=anomalies)
- **OONI** (measurement): OONI tor: 14/26 measurements anomalous (53.8%)
  - Observed: 2026-03-06
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-06&until=2026-03-06&only=anomalies)
- **OONI** (measurement): OONI tor: 10/19 measurements anomalous (52.6%)
  - Observed: 2026-03-06
  - Confidence: 71%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-06&until=2026-03-06&only=anomalies)
- **OONI** (measurement): OONI tor: 6/7 measurements anomalous (85.7%)
  - Observed: 2026-03-05
  - Confidence: 84%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-05&until=2026-03-05&only=anomalies)
- **OONI** (measurement): OONI tor: 9/15 measurements anomalous (60.0%)
  - Observed: 2026-03-05
  - Confidence: 74%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-05&until=2026-03-05&only=anomalies)
- **OONI** (measurement): OONI tor: 12/20 measurements anomalous (60.0%)
  - Observed: 2026-03-05
  - Confidence: 74%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-05&until=2026-03-05&only=anomalies)
- **OONI** (measurement): OONI tor: 14/24 measurements anomalous (58.3%)
  - Observed: 2026-03-05
  - Confidence: 73%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-05&until=2026-03-05&only=anomalies)
- **OONI** (measurement): OONI tor: 6/10 measurements anomalous (60.0%)
  - Observed: 2026-03-04
  - Confidence: 74%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-04&until=2026-03-04&only=anomalies)
- **OONI** (measurement): OONI tor: 11/16 measurements anomalous (68.8%)
  - Observed: 2026-03-04
  - Confidence: 78%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-04&until=2026-03-04&only=anomalies)
- **OONI** (measurement): OONI tor: 10/16 measurements anomalous (62.5%)
  - Observed: 2026-03-04
  - Confidence: 75%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-04&until=2026-03-04&only=anomalies)
- **OONI** (measurement): OONI tor: 15/30 measurements anomalous (50.0%)
  - Observed: 2026-03-04
  - Confidence: 70%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-04&until=2026-03-04&only=anomalies)
- **OONI** (measurement): OONI tor: 13/21 measurements anomalous (61.9%)
  - Observed: 2026-03-03
  - Confidence: 75%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-03&until=2026-03-03&only=anomalies)
- **OONI** (measurement): OONI tor: 15/22 measurements anomalous (68.2%)
  - Observed: 2026-03-03
  - Confidence: 77%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-03&until=2026-03-03&only=anomalies)
- **OONI** (measurement): OONI tor: 9/14 measurements anomalous (64.3%)
  - Observed: 2026-03-02
  - Confidence: 76%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-02&until=2026-03-02&only=anomalies)
- **OONI** (measurement): OONI tor: 13/16 measurements anomalous (81.2%)
  - Observed: 2026-03-02
  - Confidence: 82%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-02&until=2026-03-02&only=anomalies)
- **OONI** (measurement): OONI tor: 13/18 measurements anomalous (72.2%)
  - Observed: 2026-03-01
  - Confidence: 79%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-01&until=2026-03-01&only=anomalies)
- **OONI** (measurement): OONI tor: 11/13 measurements anomalous (84.6%)
  - Observed: 2026-03-01
  - Confidence: 84%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-01&until=2026-03-01&only=anomalies)
- **OONI** (measurement): OONI tor: 14/20 measurements anomalous (70.0%)
  - Observed: 2026-03-01
  - Confidence: 78%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-01&until=2026-03-01&only=anomalies)
- **OONI** (measurement): OONI tor: 11/14 measurements anomalous (78.6%)
  - Observed: 2026-03-01
  - Confidence: 81%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=VN&test_name=tor&since=2026-03-01&until=2026-03-01&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.
- **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 VN (2026-03) [VN-2026-0201]. Retrieved from https://voidly.ai/incident/VN-2026-0201

---
*Report generated by Voidly Research on 2026-06-21*
*Data licensed under CC BY 4.0*
*Incident ID: VN-2026-0201*
*Permalink: https://voidly.ai/incident/VN-2026-0201*