Guancheng Li (李冠成)

Senior reseacher, Tencent Security Xuanwu Lab, Tencent Inc.
Tencent Beijing headquarters building, Haidian District, Beijing
Former CTFer in #Bluelotus#, #Tea-Devliverers#
Former Captain and cofounder of #Eur3ka#, #[r3kapig](


  • B.S. degree, Computer Science and Technology, Wuhan University. 2016
  • M.S. degree, Computer Applications Technology, Peking University. 2019

Research Interests

  • Software and System Security
  • IoT/Wireless Security
  • Protocol Security

CTF Career

I am good at solving binary(PWN/Reverse) challenges Howerver, when I play CTF, I often try challenges that I am really not good at.

I’d like to write technical posts and ctf write-ups on my blog.

I play CTF less frequently after I enter the labor force.



  1. Guancheng Li, Yongheng Chen, Tianyi Li, Tongxin Li, Xinfeng Wu, Chao Zhang, Xinhui Han POSTER: PT-DBG: Automatically anti-debugging bypassing based on Intel Processor Trace,Security & Privacy IEEE, 2018

  2. Qian Wang, Kui Ren, Guancheng Li, Chenbo Xia, Xiaobing Chen, Zhibo Wang, and Qin Zou. “Walls Have Ears! Opportunistically Communicating Secret Messages Over the Wiretap Channel: from Theory to Practice” In Proceedings of the 2015 ACM Conference on Computer and Communications Security,  ACM, 2015.

  3. 张慧琳,李冠成,丁羽,段镭,韩心慧,肖建国.基于分隔符的跨站脚本攻击防御方法[J/OL].北京大学学报(自然科学版):1-11[2018-04-11].

  4. 张慧琳, 丁羽, 张利华,等. 基于敏感字符的SQL注入攻击防御方法[J]. 计算机研究与发展, 2016, 53(10):2262-2276.

  5. 李冠成,丁怡婧,魏爽,韩心慧。“基于NetFlow 的P2P 僵尸网络检测技术研究”,第十届信息安全漏洞分析与风险评估大会(VARA2017)