Welcome! I'm Yunyi Zhang, a postdoctoral researcher at the Network and Information Security Laboratory of Tsinghua University, working under the supervision of Associate Professor Baojun Liu. My research focuses on network security, internet measurement, emerging cyberspace security threats, and LLM privacy and security.
I have published papers at top academic venues, including USENIX Security, ACM CCS, ACM IMC, ISOC NDSS, IEEE TDSC, and IEEE TIFS. My research has achieved real-world impact, receiving bug-bounty rewards from several leading vendors such as Baidu, Tencent, Microsoft, Yahoo, Alibaba, and Amazon.
I am on the job market! I am looking for faculty positions of the 2027 academic year.🌐 Network & DNS Security
Discovering and mitigating real-world vulnerabilities across the internet infrastructure, with a focus on the DNS ecosystem — from glue records and bailiwick rules to delegation integrity.
🔍 Cybercrime Detection & Countermeasures
Measuring emerging cyberspace threats at scale and building detection and defense techniques against abuse such as black-hat SEO and large-scale scams.
🛡️ LLM Privacy & Security
Investigating the security and privacy risks of large language models and LLM-powered applications, and designing safeguards for the next generation of AI-driven systems.
Recent News
Publications
Selected Awards & Honors
- NDSS Distinguished Paper Award
- Shuimu Tsinghua Scholar
- Outstanding Doctoral Dissertation of National University of Defense Technology
- National University of Defense Technology: Innovative Research Group
- China National Scholarship for Graduate Students
Service
Program Committee: RAID (2026), WWW (2026)
Invited Talk: InForSec (2025)
Contact
Office
Room 1-213, FIT
Tsinghua University
Beijing, China