姓名：刘保君

职称：助理教授

邮箱：lbj@tsinghua.edu.cn

主页地址：https://www.liubaojun.org

工学博士，清华大学，中国，2015.09-2020.10

访问学者，加州大学伯克利分校，美国，2018.01-2019.01

工学学士，西安电子科技大学，中国，2011.09-2015.07

2022.12 – 今. 清华大学网络研究院助理教授

2020.11 – 2022.11，清华大学网络研究院博士后

互联网域名系统安全

互联网公钥基础设施安全

互联网测量与分析

近年来，作为项目负责人主持国家重点研发计划青年科学家项目、国家自然科学基金青年项目，入选国家高层次青年人才支持计划。主要学术方向及重点包括：1）在互联网基础设施测量方面，设计了域名、PKI 等关键基础设施的大规模安全测量方法，并证实了全球范围内域名解析劫持、根证书植入等基础设施操控行为。2）在互联网协议安全分析方面， 发现了 DNS、 HTTP 等核心基础协议的系列重大安全缺陷并提出解决方案，提升了互联网基础协议的安全性。3）在互联网地下黑灰产对抗方面，提出了检测涉网新型犯罪黑灰产业链的关键技术方法，应用在实际的网络和产品中，保护了用户的安全。

研究成果在国际学术界与工业界均产生了重要影响。成果收录于美国、欧盟等多国政府安全机构以及国际互联网组织 ICANN 的权威报告中，被 ZDNet、ACM TechNews 等几十家国际知名媒体宣传报道。

2023，网络安全顶会CCS杰出论文奖

2023，首届“互联网基础技术贡献奖”

2022，ACM中国计算机安全分会“新星奖”

2020，清华大学“水木学者”

2020，国际互联网协会与互联网研究任务组网络研究应用奖

2020，网络可靠系统顶会DSN 最佳论文奖

2019，网络安全顶会NDSS杰出论文奖

2019，网络测量顶会IMC最佳论文奖提名、社区贡献奖提名

ICANN 根服务器系统安全与稳定咨询委员会成员

Asi@Connect 专家委员会成员

[1] Yunpeng Xing, Chaoyi Lu, Baojun Liu, Haixin Duan, Junzhe Sun, Zhou Li. “Yesterday Once More: Global Measurement of Internet Traffic Shadowing Behaviors.” In Proceedings of the 2024 ACM on Internet Measurement Conference (IMC 2024), Madrid, Spain, November 4 - 6, 2024, pp. 230 - 240. ACM, 2024.

[2] Yunyi Zhang, Baojun Liu, Haixin Duan, Min Zhang, Xiang Li, Fan Shi, Chengxi Xu, Eihal Alowaisheq. “Rethinking the Security Threats of Stale DNS Glue Records.”In 33rd USENIX Security Symposium (USENIX Security 2024), Philadelphia, PA, USA, August 14 - 16, 2024. USENIX Association, 2024.

[3] Fenglu Zhang, Baojun Liu, Eihal Alowaisheq, Jianjun Chen, Chaoyi Lu, Linjian Song, Yong Ma, Ying Liu, Haixin Duan, Min Yang. “Silence is not Golden: Disrupting the Load Balancing of Authoritative DNS Servers.” In Proceedings of the 2023 ACM SIGSAC Conference on Computer and Communications Security (CCS 2023), Copenhagen, Denmark, November 26 - 30, 2023, pp. 296–310. ACM, 2023.

[4] Wei Xu, Xiang Li, Chaoyi Lu, Baojun Liu, Haixin Duan, Jia Zhang, Jianjun Chen, Tao Wan. “TsuKing: Coordinating DNS Resolvers and Queries into Potent DoS Amplifiers.” In Proceedings of the 2023 ACM SIGSAC Conference on Computer and Communications Security (CCS 2023), Copenhagen, Denmark, November 26 - 30, 2023, pp. 311–325. ACM, 2023.

[5] Xiang Li, Baojun Liu, Xuesong Bai, Mingming Zhang, Qifan Zhang, Zhou Li, Haixin Duan, Qi Li. “Ghost Domain Reloaded: Vulnerable Links in Domain Name Delegation and Revocation.” In 30th Annual Network and Distributed System Security Symposium (NDSS 2023), San Diego, California, USA, February 27 - March 3, 2023. The Internet Society, 2023.

[6] Fenglu Zhang, Chaoyi Lu, Baojun Liu, Haixin Duan, Ying Liu. “Measuring the Practical Effect of DNS Root Server Instances: A China-Wide Case Study.” In Passive and Active Measurement - 23rd International Conference (PAM 2022), Virtual Event, March 28 - 30, 2022, Lecture Notes in Computer Science, vol. 13210, pp. 247–263. Springer, 2022.

[7] Yiming Zhang, Baojun Liu, Chaoyi Lu, Zhou Li, Haixin Duan, Jiachen Li, Zaifeng Zhang. “Rusted Anchors: A National Client-Side View of Hidden Root CAs in the Web PKI Ecosystem.” In CCS ’21: 2021 ACM SIGSAC Conference on Computer and Communications Security, Virtual Event, Republic of Korea, November 15 - 19, 2021, pp. 1373–1387. ACM, 2021.

[8] Chaoyi Lu, Baojun Liu , Yiming Zhang, Zhou Li, Fenglu Zhang, Haixin Duan , Ying Liu, Joann Qiongna Chen, Jinjin Liang, Zaifeng Zhang, Shuang Hao, Min Yang. “From WHOIS to WHOWAS: A Large-Scale Measurement Study of Domain Registration Privacy under the GDPR.” In 28th Annual Network and Distributed System Security Symposium (NDSS 2021), virtually, February 21 - 25, 2021. The Internet Society, 2021.

[9] Chaoyi Lu, Baojun Liu, Zhou Li, Shuang Hao, Hai-Xin Duan, Mingming Zhang, Chunying Leng, Ying Liu, Zaifeng Zhang, Jianping Wu. “An End-to-End, Large-Scale Measurement of DNS-over-Encryption: How Far Have We Come?” In Proceedings of the Internet Measurement Conference (IMC 2019), Amsterdam, The Netherlands, October 21 - 23, 2019, pp. 22–35. ACM, 2019.

[10] Baojun Liu, Chaoyi Lu, Hai-Xin Duan, Ying Liu, Zhou Li, Shuang Hao, Min Yang. “Who Is Answering My Queries: Understanding and Characterizing Interception of the DNS Resolution Path.” In 27th USENIX Security Symposium (USENIX Security 2018), Baltimore, MD, USA, August 15-17, 2018, pp. 1113–1128. USENIX Association, 2018.