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Indirect Prompt Injection Defense on Combined Attacks

0ASRLLM-Detector
-1.4688.44118.3528.259Feb 24, 2026

Evaluation results

MethodLinks
LLM-DetectorFoundation Model=QWEN-3-8B, Base Utility=69.82026.02043.8
ICONFoundation Model=QWEN-3-8B, Base Utility=69.82026.02052.7
LLM-DetectorFoundation Model=LLAMA-3.1-8B, Base Utility=34.52026.02022.5
ICONFoundation Model=LLAMA-3.1-8B, Base Utility=34.52026.02029.3
LLM-DetectorFoundation Model=MISTRAL-8B, Base Utility=20.12026.02010.9
ICONFoundation Model=MISTRAL-8B, Base Utility=20.12026.02016.1
MELONFoundation Model=MISTRAL-8B, Base Utility=20.12026.020.511.5
MELONFoundation Model=LLAMA-3.1-8B, Base Utility=34.52026.020.821.9
MELONFoundation Model=QWEN-3-8B, Base Utility=69.82026.022.445.5
Repeat PromptFoundation Model=QWEN-3-8B, Base Utility=69.82026.0213.253.1
DelimitingFoundation Model=QWEN-3-8B, Base Utility=69.82026.0218.450.2
Repeat PromptFoundation Model=MISTRAL-8B, Base Utility=20.12026.0219.815.6
Repeat PromptFoundation Model=LLAMA-3.1-8B, Base Utility=34.52026.0220.328.6
DelimitingFoundation Model=LLAMA-3.1-8B, Base Utility=34.52026.0222.425.8
DelimitingFoundation Model=MISTRAL-8B, Base Utility=20.12026.0223.614.1
No DefenseFoundation Model=QWEN-3-8B, Base Utility=69.82026.0230.344.2
No DefenseFoundation Model=MISTRAL-8B, Base Utility=20.12026.0233.611.1
No DefenseFoundation Model=LLAMA-3.1-8B, Base Utility=34.52026.0236.722.2