Publications

NeuroStrike: Neuron-Level Attacks on Aligned LLMs

Lichao Wu, Sasha Behrouzi, Mohamadreza Rostami, Maximilian Thang, Stjepan Picek, Ahmad-Reza Sadeghi

Network and Distributed System Security Symposium (NDSS), 2026

GateBreaker: Gate-Guided Attacks on Mixture-of-Expert LLMs

Lichao Wu, Sasha Behrouzi, Mohamadreza Rostami, Stjepan Picek, Ahmad-Reza Sadeghi

USENIX Security Symposium, 2026

GoodVibe: Security-by-Vibe for LLM-Based Code Generation

Maximilian Thang, Lichao Wu, Sasha Behrouzi, Mohamadreza Rostami, Jona te Lintelo, Stjepan Picek, Ahmad-Reza Sadeghi

arXiv preprint arXiv:2602.10778, 2026

Large Language Lobotomy: Jailbreaking Mixture-of-Experts via Expert Silencing

Jona te Lintelo, Lichao Wu, Stjepan Picek

arXiv preprint arXiv:2602.08741, 2026

Backdoor Attacks on Decentralised Post-Training

Oguzhan Ersoy, Nikolay Blagoev, Jona te Lintelo, Stefanos Koffas, Marina Krček, Stjepan Picek

ICLR 2026 Workshop on Principled Design for Trustworthy AI: Interpretability, Robustness, and Safety across Modalities, 2026

Towards Backdoor Stealthiness in Model Parameter Space

Xiaoyun Xu, Zhuoran Liu, Stefanos Koffas, Stjepan Picek

ACM Conference on Computer and Communications Security (CCS), pp. 2863–2876, 2025

On the Vulnerability of Data Points Under Multiple Membership Inference Attacks and Target Models

Mauro Conti, Jiaxin Li, Stjepan Picek

IEEE Transactions on Dependable and Secure Computing 22(4), pp. 4022–4039, 2025

An Overview of Trustworthy AI: Advances in IP Protection, Privacy-Preserving Federated Learning, Security Verification, and GAI Safety Alignment

Yue Zheng, Chip-Hong Chang, Shih-Hsu Huang, Pin-Yu Chen, Stjepan Picek

IEEE Journal on Emerging and Selected Topics in Circuits and Systems 14(4), pp. 582–607, 2024