DriftNet: A Dual-Head Trajectory Transformer for Detecting and Localizing Prompt Injection in LLM Agents

arXiv:2609.10892 · cs.CR, cs.AI, cs.LG · Submitted 2026-09-09 · Read on arXiv

cs.CR, cs.AI, cs.LG

Submitted: 2026-09-09

Updated: 2026-09-09

Comments: 15 pages, 8 figures, 11 tables. Companion detector paper to the AgentDrift benchmark (arXiv:2609.06972); dataset at https://github.com/Asif-0209/AgentDrift

Code: https://github.com/Asif-0209/AgentDrift

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Benchmark — 2× in this paper · explained in 2 episodes
• Trace — 2× in this paper · explained in 2 episodes
• Transformer — 2× in this paper · explained in 2 episodes

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