TLDR Tech / Practical
Agent architecture cuts attack success from 98% to 7% via separation of duties
A new agent architecture that separates duties into four roles has significantly reduced the success rate of prompt-injection attacks, from 98.3% to 7.7% in experimental tests. This design isolates language models from direct tool use and crucial decision-making by employing a structured planner, a deterministic policy filter, a secure executor, and an auditor. The author suggests this architectural separation effectively counters attack methods that single-model agent systems struggle to prevent.
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