Active Incident
Confirmed: sustained censorship in South Korea (2026-07)
South Korea · July 19, 2026 · Ongoing
OONI detected 5 days of elevated network interference averaging 92.8% anomaly rate.
Evidence
93%
Anomaly Rate
5
Measurements
80%
Confidence
What This Means
93% of 5 network tests from South Korea failed to reach these services. Global baseline failure rate is typically 1-3%. This 90+ percentage point difference strongly indicates intentional blocking.
How We Detected This
Data Sourceooni
ML ModelGradientBoosting v3.3 (LOCO mean F1 0.711, honest across 131 countries)
Confidence Score80% certainty of censorship
Detection TimeJuly 19, 2026
Corroborating Evidence (7)
Evidence collected from multiple independent sources. Upstream claims shown in quotes are not Voidly assertions.
OONIOpen Observatory of Network Interference7 records
tor-blocking
"OONI tor: 3/6 measurements anomalous (50.0%)"— OONI report
Signal value: 0.50
Jul 31, 2026
View source →middlebox-detection
"OONI http_invalid_request_line: 3/6 measurements anomalous (50.0%)"— OONI report
Signal value: 0.50
Jul 31, 2026
View source →block
"OONI: confirmed-blocked across 5 distinct ASNs in KR (8 confirmed of 10 measurements, 2026-07-19..2026-08-02)"— OONI report
Signal value: 0.97
Jul 19, 2026
View source →block
"OONI: confirmed-blocked across 5 distinct ASNs in KR (8 confirmed of 20 measurements, 2026-07-19..2026-08-02)"— OONI report
Signal value: 0.97
Jul 19, 2026
View source →block
"OONI: confirmed-blocked across 3 distinct ASNs in KR (7 confirmed of 11 measurements, 2026-07-19..2026-08-02)"— OONI report
Signal value: 0.90
Jul 19, 2026
View source →+ 2 more OONI records
Affected Services (1)
Tor
Blocked Domains (5)
Click any domain to view raw OONI measurements
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.
- 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 — this rests on a single source; treat it as a single-source signal, not a multi-source confirmation.
Cite This Incident
Voidly Research. (2026). Confirmed: sustained censorship in South Korea (2026-07) [KR-2026-0009]. Voidly Global Censorship Index. https://voidly.ai/incident/KR-2026-0009
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