In our recent IMC'20 work (paper, talk) we provided insight into the combination of traffic analysis and active probing techniques that the Great Firewall uses to detect and block Shadowsocks servers. In this short post, we provide practical suggestions for non-technical users and circumvention tool developers to prevent their circumvention servers from being detected and blocked. We also introduce the mitigation to partitioning oracle attacks newly demonstrated by Len et al.. If your Shadows...
