Dr. Haixin Duan is a professor at the Institute for Network Science and Cyberspace, Tsinghua University.He was once a visiting scholar at UC Berkeley and a senior scientist in International Computer Science Institute(ICSI). Dr. Duan has been working on network security for more than 20 years. His recent research interests include protocol security, intrusion detection, underground economy detection and etc. Some of his research results were deployed by industries like Baidu, and published in top security conferences like Security & Privacy, USENIX Security, CCS and NDSS. Jianjun Chen: is a PhD student at Tsinghua University supervised by Prof. Haixin Duan. In 2015, he visited UC Berkeley under the direction of Prof. Vern Paxson. Currently he has published three papers on top security conferences(NDSS, CCS, IEEE S&P). Among them, the NDSS paper on CDN forwarding loop attacks has won the conference's "Distinguished Paper Award". It is the first time that a Chinese scholar wins this award as the first author in top security conferences. His research work are not only recognized by the academic community, but also help many well-known industrial companies(eg. AKamai, Cloudflare, Tencent) and open-source software(eg. Squid) to fix multiple severe vulnerabilities.