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Indirect Prompt Injection Defense on Ignore Instruction

0ASRLLM-Detector
-15.7512.519.25Feb 24, 2026

Evaluation results

MethodLinks
LLM-DetectorFoundation Model=QWEN-3-8B, Base Utility=69.82026.02047.2
ICONFoundation Model=QWEN-3-8B, Base Utility=69.82026.02058.2
LLM-DetectorFoundation Model=LLAMA-3.1-8B, Base Utility=34.52026.02025.2
ICONFoundation Model=LLAMA-3.1-8B, Base Utility=34.52026.02032.6
LLM-DetectorFoundation Model=MISTRAL-8B, Base Utility=20.12026.02011.4
ICONFoundation Model=MISTRAL-8B, Base Utility=20.12026.02017.6
MELONFoundation Model=MISTRAL-8B, Base Utility=20.12026.020.212.1
MELONFoundation Model=LLAMA-3.1-8B, Base Utility=34.52026.020.626.1
MELONFoundation Model=QWEN-3-8B, Base Utility=69.82026.021.348.7
Repeat PromptFoundation Model=MISTRAL-8B, Base Utility=20.12026.0210.317.8
Repeat PromptFoundation Model=QWEN-3-8B, Base Utility=69.82026.0211.754.2
DelimitingFoundation Model=MISTRAL-8B, Base Utility=20.12026.0212.116.5
Repeat PromptFoundation Model=LLAMA-3.1-8B, Base Utility=34.52026.0214.630.1
DelimitingFoundation Model=QWEN-3-8B, Base Utility=69.82026.0215.352.9
No DefenseFoundation Model=MISTRAL-8B, Base Utility=20.12026.0216.312.5
DelimitingFoundation Model=LLAMA-3.1-8B, Base Utility=34.52026.0216.828.1
No DefenseFoundation Model=LLAMA-3.1-8B, Base Utility=34.52026.0223.425.7
No DefenseFoundation Model=QWEN-3-8B, Base Utility=69.82026.022549.7