# Sustained censorship in SV (2026-10)

**Country:** 🇸🇻 El Salvador (SV)
**Date:** 2026-10-06
**Type:** Censorship
**Severity:** CRITICAL
**Status:** confirmed

## Summary

OONI detected 4 days of elevated network interference averaging 58.3% anomaly rate.

## Metrics

- Confidence: 69%
- Measurements (stored incident count; not the qualifying evidence count): 4
- Anomaly Rate: 58.3%

## Evidence

- **OONI** (measurement): OONI http_header_field_manipulation: 6 anomaly + 0 confirmed / 12 nonfailed measurements (50.0% blocked; 0 failed)
  - Observed: 2026-10-07
  - Confidence: 70%
  - [OONI Explorer filtered results (not one measurement)](https://explorer.ooni.org/search?probe_cc=SV&test_name=http_header_field_manipulation&since=2026-10-07&until=2026-10-08)
- **OONI** (measurement): OONI http_header_field_manipulation: 6 anomaly + 0 confirmed / 9 nonfailed measurements (66.7% blocked; 0 failed)
  - Observed: 2026-10-07
  - Confidence: 77%
  - [OONI Explorer filtered results (not one measurement)](https://explorer.ooni.org/search?probe_cc=SV&test_name=http_header_field_manipulation&since=2026-10-07&until=2026-10-08)
- **OONI** (measurement): OONI http_header_field_manipulation: 4 anomaly + 0 confirmed / 6 nonfailed measurements (66.7% blocked; 0 failed)
  - Observed: 2026-10-06
  - Confidence: 77%
  - [OONI Explorer filtered results (not one measurement)](https://explorer.ooni.org/search?probe_cc=SV&test_name=http_header_field_manipulation&since=2026-10-06&until=2026-10-07)
- **OONI** (measurement): OONI http_header_field_manipulation: 4 anomaly + 0 confirmed / 8 nonfailed measurements (50.0% blocked; 0 failed)
  - Observed: 2026-10-06
  - Confidence: 70%
  - [OONI Explorer filtered results (not one measurement)](https://explorer.ooni.org/search?probe_cc=SV&test_name=http_header_field_manipulation&since=2026-10-06&until=2026-10-07)

## 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** — fewer than two source labels appear in qualifying linked evidence; stored incident source labels may include quarantined OONI observations.

## Data Sources

ooni

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). Sustained censorship in SV (2026-10) [SV-2026-0018]. Retrieved from https://voidly.ai/incident/SV-2026-0018

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*Report generated by Voidly Research on 2026-10-13*
*Data licensed under CC BY 4.0*
*Incident ID: SV-2026-0018*
*Permalink: https://voidly.ai/incident/SV-2026-0018*