600 GB of Alleged Great Firewall of China Data Published in Largest Leak Yet

Hackers leaked 600 GB of data linked to the Great Firewall of China, exposing documents, code, and operations. Full details available on the GFW Report.

On Thursday, September 11, 2025, what is being described as the largest leak linked to the Great Firewall of China surfaced online, with nearly 600 GB of material allegedly containing source code, internal communications, work logs, and technical documentation from groups said to be involved in building and maintaining the system.

The data was leaked by Enlace Hacktivista, previously linked to the Cellebrite data leak. The collective claims that the documents were traced to Geedge Networks and the MESA Lab at the Chinese Academy of Sciences’ Institute of Information Engineering. Both have long been central to the Firewall’s research and development, with Geedge led by Fang Binxing, often called the “Father of the Great Firewall.”

According to the files, their reach spreads outside China ...