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Massive Great Firewall Leak: 500GB of Source Code and Internal Documents Exposed

2025-09-14

On Thursday, September 11, 2025, the Great Firewall of China (GFW) experienced its largest-ever leak of internal documents, exposing over 500GB of source code, work logs, and internal communications. The leak originated from Geedge Networks (led by Fang Binxing) and the MESA Lab at the Chinese Academy of Sciences, revealing details of the GFW's development and operation. Documents show the technology's export to countries like Myanmar and Pakistan, alongside domestic use. This significant leak warrants further analysis, with ongoing updates promised by GFW Report.

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Great Firewall Anomaly: Widespread TCP Port 443 Outage in China

2025-08-20

Between 00:34 and 01:48 Beijing Time (UTC+8) on August 20, 2025, the Great Firewall of China (GFW) exhibited anomalous behavior, unconditionally injecting forged TCP RST+ACK packets to TCP port 443, causing a massive disruption of internet connections between China and the rest of the world. The roughly 74-minute outage affected only port 443, with asymmetrical triggering mechanisms for inbound and outbound traffic. Analysis suggests the responsible device doesn't match known GFW fingerprints, possibly indicating a new device or a misconfigured one. Researchers urge community participation to fully understand this event.