Following Myanmar's 2021 coup, Geedge developed a tool specifically to detect the server endpoints that Psiphon's app connects to, enabling nationwide blocking. OONI measurement data shows Psiphon access was 'highly limited' in Myanmar from June 2024 to March 2025—a roughly nine-month window of near-total suppression.

Geedge co-founder Fang Binxing—named 'father of the Great Firewall' in company documents—explicitly linked Geedge's international expansion to China's Belt and Road Initiative in a 2024 speech, and a Geedge job advertisement sought candidates willing to travel to Pakistan, Malaysia, Bahrain, Algeria, and India. This confirms BRI as an institutional channel for GFW-derived censorship infrastructure export, not merely bilateral commercial deals.

body policy

Geedge's internal documents show that capabilities developed for one national deployment are explicitly documented to 'trickle down' to all the company's global clients—for example, Psiphon-blocking logic developed for Myanmar was tested for Ethiopia, though not yet fully deployed there as of the leak date. This vendor-mediated capability diffusion accelerates censorship sophistication across all client states simultaneously. The same model was framed at a July 2024 Urumqi meeting as a 'long-term struggle and technical confrontation', with anti-circumvention features developed for Xinjiang slated to roll out to Geedge clients globally.

body deployment

Internal Geedge documentation lists nine commercial VPNs as 'resolved,' providing staff with documented methods for identifying and filtering each protocol's traffic. The leak shows employees reverse-engineering popular circumvention tools to develop blocking signatures, consistent with GFW practices that have rendered most commercial VPNs inaccessible inside China.

body detection

After Sandvine exited Pakistan in 2023 under U.S. sanctions, Geedge stepped in to power Pakistan's Web Monitoring System (national firewall), reportedly utilizing existing Sandvine hardware alongside new Geedge technology. This demonstrates that Western vendor exits under sanctions pressure do not disrupt national filtering infrastructure — they create vacuums filled by Chinese GFW-derivative equivalents.

Body deployment

A September 2025 leak of 100,000+ internal documents from Geedge Networks—co-founded by Great Firewall architect Fang Binxing—confirms export of GFW-derived Tiangou Secure Gateway (TSG) to Myanmar, Pakistan, Ethiopia, and Kazakhstan, providing those governments with DPI-based filtering, throttling, VPN blocking, and internet-blackout capabilities previously unavailable to them. Pakistan's deployment replaced Sandvine's Web Monitoring System infrastructure after Sandvine was sanctioned and exited in 2023, with Geedge apparently utilizing existing Sandvine hardware. Kazakhstan was the first client, from 2018, and Geedge claims more than 40 global service providers as clients under the Belt and Road Initiative framework.

body deployment

Despite Geedge's targeted Psiphon blocking in Myanmar (confirmed by OONI, June 2024–March 2025), Psiphon gained users during Myanmar's worst internet disruptions because all circumvention tools were simultaneously disrupted, with commercial VPNs collapsing first. Grant-funded tools with active anti-censorship investment (Psiphon, Tor) showed measurably greater resilience than commercial VPNs that do not invest in pluggable transport infrastructure.

Body evaluation

InterSecLab's 76-page analysis of the Geedge/MESA leak (based on nine months of indexing and translating >100,000 documents) characterizes the Tiangou Secure Gateway (TSG) product line as a commercially deployable detection stack that combines deep packet inspection, real-time mobile subscriber monitoring, active probing, ML-based traffic classifiers, and granular per-region rule sets. TSG is not a research prototype — leaked documentation includes deployment timelines and client government interactions for Kazakhstan, Ethiopia, Pakistan, Myanmar, and one unnamed country, with censorship rules explicitly tailored to each region.

2025-interseclab-internet-coup §3–§5 (InterSecLab report) dpiactive-probingml-classifiersni-blockingip-blockingtraffic-shapefully-encrypted-detect

Justice for Myanmar documents that Geedge Networks supplied Myanmar's military junta with GFW-derived surveillance and censorship infrastructure under Belt and Road frameworks following the February 2021 coup. The deployed system (Tiangou Secure Gateway / TSG) incorporates the same DPI, active-probing, and ML-classifier capabilities as the domestic Chinese GFW, giving Myanmar one of the most technically capable censorship systems in Southeast Asia.

2025-jfm-silk-road-surveillance §3, §5 dpisni-blockingip-blockingtraffic-shapeml-classifieractive-probing

TURN servers used by major applications such as Facebook Messenger for media relay are hypothesized to be less likely blocked in censored regions due to collateral damage to legitimate WebRTC traffic. Providers like Cloudflare, Metered Video, and ExpressTURN supply geographically distributed TURN infrastructure that can be used without any special configuration by a censorship evasion system.

2025-vilalonga-extended §1 Introduction & Background dpiactive-probingip-blocking

Traffic splitting across N TURN proxies (1 ≤ N ≤ M) is hypothesized to resist active probing because each TURN server responds to probing requests identically to a regular TURN server, providing no distinguishing signal. Additionally, proxy ephemerality combined with splitting allows on-the-fly migration to new proxies when existing ones are blocked, maintaining connectivity even under partial blocking.

2025-vilalonga-extended §3.3 Censorship Evasion active-probingip-blockingdpi

Residual censorship — where a censor detects an objectionable connection via one method and then blocks all traffic between the same 3-tuple (client IP + server IP + port) or 4-tuple (client IP + port + server IP + port) for a short duration — was documented in China, Iran, and Kazakhstan. This means a single detected circumvention attempt can trigger temporary IP-level blocking of the entire endpoint regardless of protocol.

2023-master-worldwide §4.3 ip-blockingdpiactive-probing

Following the invasion, Psiphon user counts and VPN usage in Russia increased many-fold and correlated with specific censorship events, while multiple access paths to Tor (direct connections, bridges, pluggable transports) were progressively blocked. Despite this surge, circumvention tools reached only a small fraction of all Russian Internet users, indicating that aggressive multi-vector blocking and lack of user awareness left most people unable to access censored resources.

2023-ramesh-network §6 ip-blockingdpiactive-probing