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Trevor Zhang
Applied Scientist
Tencent · Beijing, China
Formerly Institute of Software, Chinese Academy of Sciences
We always need something beyond mere desire.
Keywords:Agent Memory · LLM Routing · LLM Security · Retrieval-Augmented Generation · Adversarial Attacks
Currently in Beijing
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Figure 1. My room.
- 1 The desk
- 2 Two papers
- 3 NAS
- 4 The shelf
- 5 A board game
- 6 A pool cue
- 7 A football
- 8 A dumbbell
- 9 A bicycle
- 10 A snowboard
- 11 A plant
1Publications
View all- [1]
Joint-GCG: Unified Gradient-Based Poisoning Attacks on Retrieval-Augmented Generation Systems
Haowei Wang*, Rupeng Zhang*, Junjie Wang, Mingyang Li, Yuekai Huang, Dandan Wang, Qing Wang
Proceedings of the AAAI Conference on Artificial IntelligenceAAAI 2026· Co-first author
A framework that unifies gradient-based poisoning against RAG systems by jointly optimizing the attack for the retriever and the generator, rather than treating them as two separate targets.
- [2]
ToolCommander: Adversarial Tool Injection against LLM Tool-Calling Systems
Rupeng Zhang, Haowei Wang, Junjie Wang, Mingyang Li, Yuekai Huang, Dandan Wang, Qing Wang
Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the ACL (Main, Long Papers)NAACL 2025· First author
A framework that exploits vulnerabilities in LLM tool-calling systems, enabling privacy theft, denial-of-service attacks, and business competition manipulation through adversarial tool injection.
2Selected Work
View allAll made on weekends, however far they got.
3Recent Writing
View allSome engineering, some research, some everyday life.
Six Months at Tencent: Big Company, Startup Heart
First impressions of working at Tencent—a warm and inclusive team, far fewer big-company processes than I imagined, root access to GPU servers, building things from zero to one, and a monthly commute-by-plane to Chengdu to meet the colleagues I work with every day but never see.
- life
- career
Three Thousand Kilometers Before We Scatter: A Graduation Trip on the Qinghai–Gansu Loop
Seven days, three thousand kilometers, one car, and the whole Northwest laid out in front of us. A graduation trip through Qinghai and Gansu—salt lakes, desert, Danxia, grassland, the Milky Way over a no-man's land, and the last stretch of road before everyone goes their separate way.
- life
- travel
- graduation
The Indonesia Detour: Volcano Sunrises, Blue Fire, and the Dolphins That Stood Us Up
After AAAI wrapped up in Singapore, we hopped across the strait to Indonesia—catching sunrise over Mount Bromo, descending into Ijen's sulfur clouds, and getting thoroughly stood up by the dolphins of Lovina. A trip about what nature shows you, and what it doesn't.
- life
- travel