# Internet connectivity disruption in Vietnam

**Country:** 🇻🇳 Vietnam (VN)
**Date:** 2026-10-15
**Type:** Disruption
**Severity:** CRITICAL
**Status:** active

## Summary

IODA detected significant connectivity drop in Vietnam. 50 critical alerts recorded.

## Metrics

- Confidence: 75%
- Measurements (stored incident count; not the qualifying evidence count): 50
- Anomaly Rate: 94.8%

## Evidence

- **IODA** (alert): IODA detected critical level outage for Quảng Ninh
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Điện Biên
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Thái Nguyên
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Lai Chau
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Lạng Sơn
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Son La
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Thanh Hóa
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Yên Bái
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Hòa Bình
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Hải Dương
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Hải Phòng
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Đồng Bằng Sông Hồng
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Bắc Ninh
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Ninh Bình
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Nam Định
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Phú Thọ
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Bắc Giang
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Thái Bình
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Ha Tinh
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Nghệ An
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Quảng Bình
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Dak Lak
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Gia Lai
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Khánh Hòa
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Lâm Đồng
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Ninh Thuận
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Tiền Giang
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Đắk Nông
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Bình Phước
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Bình Định
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Kon Tum
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Quàng Nam
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Quảng Ngãi
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Quảng Trị
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Thừa Thiên - Huế
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Đà Nẵng
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Đông Nam Bộ
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Kiên Giang
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Long An
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Bến Tre
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Hau Giang
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Bạc Liêu
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Cà Mau
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Sóc Trăng
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Trà Vinh
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Vĩnh Long
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Cao Bằng
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Hà Giang
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Lào Cai
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)
- **IODA** (alert): IODA detected critical level outage for Unknown Region in Viet Nam
  - Observed: 2026-10-15
  - Confidence: 85%
  - [IODA entity dashboard (observation-day parameters; not one measurement)](https://ioda.inetintel.cc.gatech.edu/country/VN?from=1792022400&until=1792108800)

## 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** — fewer than two source labels appear in qualifying linked evidence; stored incident source labels may include quarantined OONI observations.
- **Whether this is censorship** — this is a connectivity *disruption* (outage) signal, not confirmed intentional blocking.

## Data Sources

ioda

These source labels come from qualifying linked evidence. Historical incident source labels and quarantined observations are excluded; multiple labels alone do not establish independent corroboration.

## Citation

Voidly Research. (2026). Internet connectivity disruption in Vietnam [VN-2026-1001]. Retrieved from https://voidly.ai/incident/VN-2026-1001

---
*Report generated by Voidly Research on 2026-10-16*
*Data licensed under CC BY 4.0*
*Incident ID: VN-2026-1001*
*Permalink: https://voidly.ai/incident/VN-2026-1001*