I am a fourth-year Ph.D. student at the Manning College of Information & Computer Sciences at UMass Amherst, advised by Amir Houmansadr. My research focuses on trustworthy generative AI, with an emphasis on privacy and security risks in large language models and multimodal systems. I obtained my bachelor’s degree from Sharif University of Technology.
🤝 Open to Collaboration
Curious about how to break generative models? Me too. I'm happy to chat, brainstorm, or collaborate on new ideas around LLM and multimodal model vulnerabilities. Just shoot me an email: anaseh (at) umass.edu.
Curious about how to break generative models? Me too. I'm happy to chat, brainstorm, or collaborate on new ideas around LLM and multimodal model vulnerabilities. Just shoot me an email: anaseh (at) umass.edu.
News & Updates
- September 9, 2025 🎓 Our paper, "Exploiting Leaderboards for Large-Scale Distribution of Malicious Models", was accepted at the 2026 IEEE Symposium on Security and Privacy (S&P).
- September 1, 2025 📄 Our new preprint, "Throttling Web Agents Using Reasoning Gates", is out.
- July 11, 2025 📄 Our new preprint, "Exploiting Leaderboards for Large-Scale Distribution of Malicious Models", is out.
- June 11, 2025 🎓 Our paper, "Backdooring Bias (B²) into Stable Diffusion Models", was accepted at the 2025 USENIX.
- May 19, 2025 I returned to Oracle Labs as a Research Intern this summer.
Show older news
- May 1, 2025 🎓 Our paper, "Riddle Me This! Stealthy Membership Inference for Retrieval-Augmented Generation", was accepted at the 2025 ACM CCS.
- February 5, 2025 📄 Our new preprint, "OverThink: Slowdown Attacks on Reasoning LLMs", is out.
- February 1, 2025 📄 Our new preprint, "Riddle Me This! Stealthy Membership Inference for Retrieval-Augmented Generation", is out.
- January 20, 2025 📄 Our new preprint, "Synthetic Data Can Mislead Evaluations: Membership Inference as Machine Text Detection", is out.
- September 16, 2024 🔦 Our paper, "Iteratively Prompting Multimodal LLMs to Reproduce Natural and AI-Generated Images", was selected for an Oral Spotlight Presentation at COLM 2024 (Top 2%).
- August 30, 2024 🎓 Our paper, "Diffence: Fencing Membership Privacy With Diffusion Models", was accepted at the 2025 NDSS.
- July 10, 2024 🎓 Our paper, "Iteratively Prompting Multimodal LLMs to Reproduce Natural and AI-Generated Images", was accepted at the 2024 COLM.
- May 20, 2024 I started a new position as a Research Intern at Oracle, working on membership inference attacks in LLMs.
- May 17, 2024 I received my Master’s degree and subsequently advanced to Ph.D. candidacy.
- May 6, 2024 🌟 I received the Distinction Award for Portfolio Excellence from the Manning College of Information & Computer Sciences at UMass Amherst.
- March 15, 2024 🎤 I presented a talk titled "Stealing the Decoding Algorithms of Language Models" at the 2024 New England Security Day.
- December 22, 2023 🎓 Our paper, "Memory Triggers: Unveiling Memorization in Text-To-Image Generative Models through Word-Level Duplication", was accepted at the 2024 PPAI.
- November 30, 2023 🏆 Our paper, "Stealing the Decoding Algorithms of Language Models", won a Distinguished Paper Award at the 2023 ACM CCS.
- May 8, 2023 🎓 Our paper, "Stealing the Decoding Algorithms of Language Models", was accepted at the 2023 ACM CCS.