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China’s Man-on-the-Side Attack on GitHub - NETRESEC Blog
This attack demonstrates how the vast passive and active network filtering infrastucture in China, known as the Great Firewall of China or "GFW", can be used in order to perform powerful DDoS attacks. Hence, the GFW cannot be considered just a technology for inspecting and censoring the Internet traffic of Chinese citizens, but also a platform for conducting DDoS attacks against targets world wide with help of innocent users visiting Chinese websites.