刘保君 - 清华大学 - 网络科学与网络空间研究院

个人简介

教育背景工学博士，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 工作履历 2022.12 – 今. 清华大学网络研究院助理教授、博士生导师；中关村国家实验室、泉城实验室 2020.11 – 2022.11，清华大学网络研究院博士后（水木学者）奖励与荣誉 2022，ACM中国计算机安全分会“科技新星奖” 2020，清华大学“水木学者” 2020，清华大学计算机系优秀博士毕业生 2020，互联网研究任务组网络研究应用奖（ANRP） 2020，IEEE/IFIP DSN 会议最佳论文奖 2019，NDSS 会议杰出论文奖 2019，ACM IMC 会议最佳论文奖提名、社区贡献奖提名学术任职与公共服务 ICANN 根服务器系统安全与稳定咨询委员会成员组织安全竞赛：DataCon 大数据安全分析竞赛, Coremail 邮件安全竞赛期刊论文审稿: IEEE Transactions on Dependable and Securing Computing (TDSC), ACM Transactions on Privacy and Security (TOPS), Computer Networks (CN), ACM Digital Threats: Research and Practice (DTRAP) 会议论文审稿：Network and Distributed System Security Symposium (NDSS), ACM Conference on Computer and Communications Security (CCS), European Symposium on Research in Computer Security (ESORICS), International Conference on Distributed Computing Systems (ICDCS), Annual Computer Security Applications Conference (ACSAC), IEEE/IFIP International Conference on Dependable Systems and Networks (DSN)

研究领域

大规模网络流量操控行为检测与分析互联网域名系统安全与测量公钥基础设施安全与测量涉网犯罪与黑灰产业链检测及对抗

近期论文

查看导师新发文章（温馨提示：请注意重名现象，建议点开原文通过作者单位确认）

Xiang Li, Chaoyi Lu, Baojun Liu, Qifan Zhang, Zhou Li, Haixin Duan and Qi Li. The Maginot Line: Attacking the Boundary of DNS Caching Protection, Proceedings of The 32nd USENIX Security Symposium (USENIX Security), Anaheim, California, USA, August 9-11, 2023. Run Guo, Jianjun Chen, Yihang Wang, Keran Mu, Baojun Liu, Xiang Li, Chao Zhang, Haixin Duan and Jianping Wu. Temporal CDN-Convex Lens: A CDN-Assisted Practical Pulsing DDoS Attack, Proceedings of The 32nd USENIX Security Symposium (USENIX Security), Anaheim, California, USA, August 9-11, 2023. Mingming Zhang, Xiang Li, Baojun Liu, Jianju Lu, Yiming Zhang, Jianjun Chen, Haixin Duan, Shuang Hao and Xiaofeng Zheng. Detecting and Measuring Security Risks of Hosting-Based Dangling Domains, Proceedings of The 2023 ACM SIGMETRICS (ACM SIGMETRICS), Orlando, Florida, USA, June 19-23, 2023. Xiang Li, Baojun Liu, Xuesong Bai, Mingming Zhang, Qifan Zhang, Zhou Li, Haixin Duan and Qi Li. Ghost Domain Reloaded: Vulnerable Links in the Domain Name Delegation and Revocation, Proceedings of The 30th Annual Network and Distributed Security Symposium (NDSS), San Diego, California, USA, 27 February – 3 March, 2023. Mingxuan Liu, Yiming Zhang, Baojun Liu and Haixin Duan. Exploring the Characteristics and Security Risks of Emerging Emoji Domain Names, Proceedings of The 27th European Symposium on Research in Computer Security (ESORICS), Copenhagen, Denmark, September 26-30, 2022. Huikai Xu, Miao Yu, Yanhao Wang, Yue Liu, Qinsheng Hou, Zhenbang Ma, Haixin Duan, Jianwei Zhuge and Baojun Liu. Trampoline Over the Air: Breaking in IoT Devices Through MQTT Brokers, Proceedings of The 7th IEEE European Symposium on Security and Privacy (EuroS&P), Genoa, June 6-10, 2022. Fenglu Zhang, Chaoyi Lu, Baojun Liu, Haixin Duan and Ying Liu. Measuring the Practical Effect of DNS Root Server Instances: A China-Wide Case Study, Proceedings of Passive and Active Measurement Conference (PAM), Virtual event, March 28-30, 2022. Qinge Xie, Shujun Tang, Xiaofeng Zheng, Qingran Lin, Baojun Liu, Haixin Duan and Frank Li. Building an Open, Robust, and Stable Voting-Based Internet Domain Top List, Proceedings of The 31th USENIX Security Symposium (USENIX Security), Boston, MA, USA, August 10-12, 2022. Chuhan Wang, Kaiwen Shen, Minglei Guo, Yuxuan Zhao, Mingming Zhang, Jianjun Chen, Baojun Liu, Xiaofeng Zheng, Haixin Duan, Yanzhong Lin and Qingfeng Pan. A Large-scale and Longitudinal Measurement Study of DKIM Deployment, Proceedings of The 31th USENIX Security Symposium (USENIX Security), Boston, MA, USA, August 10-12, 2022. Xuewei Feng, Qi Li, Kun Sun, Ke Xu, Baojun Liu, Xiaofeng Zheng, Qiushi Yang, Haixin Duan and Zhiyun Qian. PMTUD is not Panacea: Revisiting IP Fragmentation Attacks against TCP, Proceedings of The 29th Annual Network and Distributed Security Symposium (NDSS), San Diego, California, 27 Feruary - 3 March, 2022. Mingxuan Liu, Yiming Zhang, Baojun Liu, Zhou Li, Haixin Duan and Donghong Sun. Detecting and Characterizing SMS Spearphising Attacks, Proceedings of The 37th Annual Computer Security Applications Conference (ACSAC), Austin, Texas, USA, December 6-10, 2021. Yiming Zhang, Baojun Liu, Chaoyi Lu, Zhou Li, Haixin Duan, Jiachen Li and Zaifeng Zhang. Rusted Anchors: A National Client-Side View of Hidden Root CAs in the Web PKI Ecosystem, Proceedings of The 28th ACM Conference on Computer and Communications Security (CCS), Seoul, South Korea, November 15-19, 2021. Xiang Li, Baojun Liu, Xiaofeng Zheng, Haixin Duan, Qi Li and Youjun Huang. Fast IPv6 Network Periphery Discovery and Security Implications, Proceedings of The 51th IEEE/IFIP International Conference on Dependable Systems and Networks (DSN), Virtual, June 21-24, 2021. Chaoyi Lu, Baojun Liu, Yiming Zhang, Zhou Li, Fenglu Zhang, Haixin Duan, Ying Liu, Joann Chen, Jinjin Liang, Zaifeng Zhang, Shuang Hao and Min Yang. From WHOIS to WHOWAS: A Large-Scale Measurement Study of Domain Registration Privacy under the GDPR, Proceedings of The 28th Annual Network and Distributed Security Symposium (NDSS), Virtual, February 21-25, 2021. Kaiwen Shen, Chuhan Wang, Xiaofeng Zheng, Minglei Guo, Chaoyi Lu, Baojun Liu, Yuxuan Zhao, Shuang Hao, Haixin Duan, Qinfeng Pan and Min Yang. Weak Links in Authentication Chains: A Large-scale Analysis of Email Sender Spoofing Attacks, Proceedings of The 30th USENIX Security Symposium (USENIX Security), Vancouver, BC, Canada, August 11-13, 2021. Mingming Zhang, Xiaofeng Zheng, Kaiwen Shen, Ziqiao Kong, Chaoyi Lu, Yu Wang, Haixin Duan, Shuang Hao, Baojun Liu and Min Yang. Talking with Familiar Strangers: An Empirical Study on HTTPS Context Confusion Attacks, Proceedings of The 27th ACM Conference on Computer and Communications Security (CCS), Orlando, USA, November 9-13, 2020. Yiming Zhang, Baojun Liu, Chaoyi Lu, Zhou Li, Haixin Duan, Shuang Hao, Mingxuan Liu, Ying Liu, Dong Wang and Qiang Li. Lies in the Air: Characterizing Fake-base-station Spam Ecosystem in China, Proceedings of The 27th ACM Conference on Computer and Communications Security (CCS), Orlando, USA, November 9-13, 2020. Xiaofeng Zheng, Chaoyi Lu, Jian Peng, Qiushi Yang, Dongjie Zhou, Baojun Liu, Keyu Man, Shuang Hao, Haixin Duan and Zhiyun Qian. Poison over Troubled Forwarders: A Cache Poisoning Attack Targeting DNS Forwarding Devices, Proceedings of The 29th USENIX Security Symposium (USENIX Security), Boston, MA, USA, August 12-14, 2020. Weizhong Li, Kaiwen Shen, Run Guo, Baojun Liu, Jia Zhang, Haixin Duan, Shuang Hao, Xiarun Chen and Yao Wang. CDN Backfired: Amplification Attacks Based on HTTP Range Requests, Proceedings of The 50th IEEE/IFIP International Conference on Dependable Systems and Networks (DSN), Valencia, Spain, June 29 - July 02, 2020. Ruo Guo, Weizhong Li, Baojun Liu, Shuang Hao, Haixin Duan, Jia Zhang, Kaiwen Shen, Jianjun Chen and Ying Liu. CDN Judo: Breaking the CDN DoS Protection with Itself, Proceedings of The 27th ISOC Network and Distributed System Security Symposium (NDSS), Valencia, Spain, June 29 - July 02, 2020. Chaoyi Lu, Baojun Liu, Zhou Li, Shuang Hao, Haixin Duan, Mingming Zhang, Chunying Leng, Ying Liu, Zaifeng Zhang and Jianping Wu. An End-to-End, Large-Scale Measurement of DNS-over-Encryption: How Far Have We Come? Proceedings of The 2019 Internet Measurement Conference (IMC), Amsterdam, Netherlands, October 21-23, 2019. Kun Du, Hao Yang, Zhou Li, Haixin Duan, Shuang Hao, Baojun Liu, Yuxiao Ye, Mingxuan Liu, Xiaodong Su, Guang Liu, Zhifeng Geng, Zaifeng Zhang and Jinjin Liang. TL;DR Hazard: A Comprehensive Study of Levelsquatting Scams, Proceedings of The 15th International Conference on Security and Privacy On Communication Networks (SecureComm), Orlando, USA, October 23-25, 2019. Baojun Liu, Zhou Li, Peiyuan Zong, Chaoyi Lu, Haixin Duan, Ying Liu, Sumayah Alrwais, XiaoFeng Wang, Shuang Hao, Yaoqi Jia, Yiming Zhang, Kai Chen and Zaifeng Zhang. TraffickStop: Detecting and Measuring Illicit Traffic Monetization Through Large-scale DNS Analysis, Proceedings of The 4th IEEE European Symposium on Security and Privacy (IEEE EuroS&P), Stockholm, Sweden, June 17-19, 2019. Eihal Alowaisheq, Peng Wang, Sumayah Alrwais, Xiaojing Liao, XaioFeng Wang, Tasneem Alowaisheq, XiangHang Mi, Siyuan Tang and Baojun Liu. Cracking Wall of Confinement: Understanding and Analyzing Malicious Domain Takedowns, Proceedings of The 26th ISOC Network and Distributed System Security Symposium (NDSS), San Diego, CA, USA, February 24-27, 2020. Xianghang Mi, Xuan Feng, Xiaojing Liao, Baojun Liu, Xiaofeng Wang, Feng Qian, Zhou Li, Sumayah Alrwais, Limin Sun and Ying Liu. Resident Evil: Understanding Residential IP Proxy as a Dark Service, Proceedings of The 40th IEEE Symposium on Security and Privacy (IEEE S&P), San Francisco, USA, May 20-22, 2019. Run Guo, Jianjun Chen, Baojun Liu, Jia Zhang, Chao Zhang, Haixin Duan, Tao Wan, Jian Jiang, Shuang Hao and Yaoqi Jia. Abusing CDNs for Fun and Profit: Security Issues in CDNs’ Origin Validation, Proceedings of The 37th IEEE International Symposium on Reliable Distributed Systems (SRDS), Bahia, Brazil, October 2-5, 2018. Mingming Zhang, Baojun Liu, Chaoyi Lu, Jia Zhang, Shuang Hao and Haixin Duan. Measuring Privacy Threats in China-Wide Mobile Networks, Proceedings of The 8th USENIX Workshop on Free and Open Communications on the Internet (FOCI), Baltimore, USA, August 14, 2018. Baojun Liu, Chaoyi Lu, Haixin Duan, Ying Liu, Zhou Li, Shuang Hao and Min Yang. Who Is Answering My Queries: Understanding and Characterizing Interception of the DNS Resolution Path, Proceedings of The 27th USENIX Security Symposium (USENIX Security), Baltimore, USA, August 14, 2018. Baojun Liu, Chaoyi Lu, Zhou Li, Ying Liu, Haixin Duan, Shuang Hao and Zaifeng Zhang. A Reexamination of Internationalized Domain Names: the Good, the Bad and the Ugly, Proceedings of The 48th IEEE/IFIP International Conference on Dependable Systems and Networks (DSN), Luxembourg City, Luxembourg, June 25-28, 2018. Daiping Liu, Zhou Li, Kun Du, Haining Wang, Baojun Liu and Haixin Duan. Don’t Let One Rotten Apple Spoil the Whole Barrel: Towards Automated Detection of Shadowed Domains, Proceedings of The 24th ACM Conference on Computer and Communications Security (CCS), Dallas, TX, October 30 - November 3, 2017.