BrianKrebsSep 13, 2025

The Great Firewall of China has apparently experienced a great data spill. > 500gb of source code, work logs and internal communication records were leaked. Some light reading for the weekend /s

https://gfw.report/blog/geedge_and_mesa_leak/en/

Geedge & MESA Leak: Analyzing the Great Firewall’s Largest Document Leak

The Great Firewall of China (GFW) experienced the largest leak of internal documents in its history on Thursday September 11, 2025. Over 500 GB of source code, work logs, and internal communication records were leaked, revealing details of the GFW's research, development, and operations.

GFW Report
Jeff Stice-HallSep 13, 2025
Show threadBrianKrebs

BTW #3 is probably worth paying attention to here: 3. Safety Considerations
Due to the highly sensitive nature of these leaked materials, we strongly advise anyone who chooses to download and analyze them to take proper operational security precautions. It may be possible that these files may contain potentially risky content and accessing them in an insecure environment could expose you to surveillance or malware.

Please consider analyzing these files only in an isolated (virtual) machine without internet access.

Sep 13, 2025 at 2:32pmWeb
Show threadshironekoSep 13, 2025
@briankrebs seem a lot of that is a rpm mirror?
Show threadEhay2kSep 13, 2025

@briankrebs

This ⬇️⬇️⬇️⬇️⬇️⬇️⬇️

Don't treat this as "Haha we got China's secrets!!"

Treat this as "Anyone wanting to compromise systems of threat/privacy/cybersecurity researchers will be trusting to plant bugs in this dataset."

Your privacy and security may depend on it.

Show threadEhay2kSep 13, 2025

@briankrebs
And by "trusting to plant" I meant "trying to plant" but autocorrect had other ideas.

(Autocorrect and auto suggestions have gotten completely out of control. Try shopping for a Boroscope online and see how many horoscope books you get in your results!)

Show threadṫẎℭỚ◎ᾔ ṫ◎ℳSep 13, 2025
@briankrebs I got malware just reading it.