Historical blocking: IN 2019-12-20

Voidly Research

Historical blocking: IN 2019-12-20

India · December 20, 2019 · 1 day

Backfilled from OONI historical archive. 1 anomalous day(s), 2 measurements, 38% anomaly rate. Signal types: block, interference. Signal levels: critical, warning.

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Evidence

38%

Anomaly Rate

2

Measurements

74%

Confidence

What This Means

38% of tests showed anomalies, above the typical 1-3% baseline. This suggests potential network interference.

How We Detected This

Data Sourceooni-historical-backfill

ML ModelGradientBoosting v3.3 (LOCO median F1 0.87, honest across 127 countries)

Confidence Score74% certainty of censorship

Detection TimeDecember 20, 2019

Full methodology →

What we cannot say

Who caused it — measurement data alone does not attribute this 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, an HTTP blockpage, throttling, or an infrastructure outage.
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.

Cite This Incident

Voidly Research. (2019). Historical blocking: IN 2019-12-20 [IN-2019-0003]. Voidly Global Censorship Index. https://voidly.ai/incident/IN-2019-0003

↓ BibTeX ↓ RIS ↓ Markdown ↓ JSON Full citation page →·CC BY 4.0·IN-2019-0003

Historical blocking: IN 2019-12-20

Evidence

What This Means

How We Detected This

What we cannot say

Cite This Incident

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