# Internet connectivity disruption in Vietnam

**Country:** 🇻🇳 Vietnam (VN)
**Date:** 2026-05-03
**Type:** Mixed
**Severity:** CRITICAL
**Status:** active

## Summary

IODA detected significant connectivity drop in Vietnam. 58 critical alerts recorded. CenAlert confirms censorship activity.

## Metrics

- Confidence: 75%
- Measurements: 58
- Anomaly Rate: 58.1%

## Evidence

- **IODA** (alert): IODA detected critical level outage for Kon Tum
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Lào Cai
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Hồ Chí Minh city
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Nam Định
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Quảng Ninh
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Bà Rịa - Vũng Tàu
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Bình Định
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Bắc Giang
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Lai Chau
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Dak Lak
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Bình Phước
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Hau Giang
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Bến Tre
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Quảng Trị
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Hòa Bình
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Lâm Đồng
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Ha Tinh
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Hà Nam
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Bạc Liêu
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Thái Nguyên
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Son La
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Kiên Giang
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Nghệ An
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Thanh Hóa
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Bắc Ninh
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Yên Bái
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Đông Nam Bộ
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Ninh Thuận
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Thừa Thiên - Huế
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Tuyên Quang
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Bình Thuận
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Hải Dương
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Unknown Region in Viet Nam
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Trà Vinh
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Cao Bằng
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Đồng Bằng Sông Hồng
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Đông Bắc
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Ð?ng Tháp
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Đà Nẵng
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Quảng Ngãi
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Phú Yên
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Khánh Hòa
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Cà Mau
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Đắk Nông
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Điện Biên
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Ninh Bình
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Can Tho
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Sóc Trăng
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Bình Dương
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Quàng Nam
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Thái Bình
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Hải Phòng
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for An Giang
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Quảng Bình
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Lạng Sơn
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Tây Ninh
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Gia Lai
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **IODA** (alert): IODA detected critical level outage for Hà Giang
  - Observed: 2026-05-03
  - Confidence: 77%
  - [IODA live national dashboard (not a per-event permalink)](https://ioda.inetintel.cc.gatech.edu/country/VN)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for bbc.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 4/4 probes anomalous (100.0%) for chat.openai.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for chatgpt.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for claude.ai
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for facebook.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for gemini.google.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for getlantern.org
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for google.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for huggingface.co
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for instagram.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for medium.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for nytimes.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for openai.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for protonvpn.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for psiphon.ca
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for reddit.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for signal.org
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for substack.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for telegram.org
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for theguardian.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 21/21 probes anomalous (100.0%) for tiktok.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for tumblr.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 4/4 probes anomalous (100.0%) for twitter.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for whatsapp.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)
- **CENSOREDPLANET** (dns-probe): DNS blocking detected: 3/3 probes anomalous (100.0%) for youtube.com
  - Observed: 2026-05-03
  - Confidence: 90%
  - [CensoredPlanet raw-data portal (no per-measurement permalink)](https://data.censoredplanet.org)

## 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.
- **Sub-national scope** — measurement is aggregated at the country level; we cannot localize to a province, city, or network segment.

## Data Sources

ioda, censoredplanet

## Citation

Voidly Research. (2026). Internet connectivity disruption in Vietnam [VN-2026-0081]. Retrieved from https://voidly.ai/incident/VN-2026-0081

---
*Report generated by Voidly Research on 2026-08-06*
*Data licensed under CC BY 4.0*
*Incident ID: VN-2026-0081*
*Permalink: https://voidly.ai/incident/VN-2026-0081*