# Prompt-Injection Defense on Adaptive Prompt Injection (train)

Source: [Prompt-Injection Defense on Adaptive Prompt Injection (train)](<https://www.sota2.com/research/sota/prompt-injection-defense-on-adaptive-prompt-injection-train>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2026-05-28T10:05:02.262Z

Evaluation of model defense mechanisms against prompt injection attacks using the training split of the Adaptive Prompt Injection dataset, measured by Attack Success Rate (ASR).

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

| Scope | Recorded value |
| --- | --- |
| Task | Prompt-Injection Defense |
| Dataset (including any stated split) | Adaptive Prompt Injection (train) |
| Metric | Attack Success Rate (ASR) |
| Unit | PERCENT |
| Direction | Lower is better |
| Results loaded | 15 of 15 |
| Coverage | All results currently returned for this benchmark |

Evaluation settings may differ between results. The original papers and recorded configurations are needed to establish comparability. A shared metric name alone does not establish an identical protocol.

## Metrics

- [Attack Success Rate (ASR)](<https://www.sota2.com/research/sota/prompt-injection-defense-on-adaptive-prompt-injection-train.md?metric=Attack%20Success%20Rate%20(ASR)>): Lower is better; unit: PERCENT.

## Recorded results

| Method | Attack Success Rate (ASR) | Result date | Report paper |
| --- | --- | --- | --- |
| ACT | 32 | Not recorded | 6a17cc4cdbd7150506f81558 |
| BCT | 42.4 | Not recorded | 6a17cc4cdbd7150506f81558 |
| ACT | 50.2 | Not recorded | 6a17cc4cdbd7150506f81558 |
| BCT | 52 | Not recorded | 6a17cc4cdbd7150506f81558 |
| ACT | 65 | Not recorded | 6a17cc4cdbd7150506f81558 |
| ACT | 73 | Not recorded | 6a17cc4cdbd7150506f81558 |
| BCT | 92 | Not recorded | 6a17cc4cdbd7150506f81558 |
| Baseline | 94 | Not recorded | 6a17cc4cdbd7150506f81558 |
| BCT | 95 | Not recorded | 6a17cc4cdbd7150506f81558 |
| Baseline | 98 | Not recorded | 6a17cc4cdbd7150506f81558 |
| ACT | 99 | Not recorded | 6a17cc4cdbd7150506f81558 |
| Baseline | 100 | Not recorded | 6a17cc4cdbd7150506f81558 |
| Baseline | 100 | Not recorded | 6a17cc4cdbd7150506f81558 |
| Baseline | 100 | Not recorded | 6a17cc4cdbd7150506f81558 |
| BCT | 100 | Not recorded | 6a17cc4cdbd7150506f81558 |

### ACT

Attack Success Rate (ASR): 32. Result ID: 6a181347fbc373592c125dad.

[Reporting paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

Recorded evaluation configuration: {"Target Model":"GPT-OSS-20B","Attacker suffixes":"best-of-8"}. This record does not assert independent reproduction.

### BCT

Attack Success Rate (ASR): 42.4. Result ID: 6a181347fbc373592c125dab.

[Reporting paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

Recorded evaluation configuration: {"Target Model":"Phi-4-reasoning","Attacker suffixes":"best-of-8"}. This record does not assert independent reproduction.

### ACT

Attack Success Rate (ASR): 50.2. Result ID: 6a181347fbc373592c125daa.

[Reporting paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

Recorded evaluation configuration: {"Target Model":"Phi-4-reasoning","Attacker suffixes":"best-of-8"}. This record does not assert independent reproduction.

### BCT

Attack Success Rate (ASR): 52. Result ID: 6a181347fbc373592c125dae.

[Reporting paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

Recorded evaluation configuration: {"Target Model":"GPT-OSS-20B","Attacker suffixes":"best-of-8"}. This record does not assert independent reproduction.

### ACT

Attack Success Rate (ASR): 65. Result ID: 6a181347fbc373592c125da7.

[Reporting paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

Recorded evaluation configuration: {"Target Model":"Qwen3-8B","Attacker suffixes":"best-of-8"}. This record does not assert independent reproduction.

### ACT

Attack Success Rate (ASR): 73. Result ID: 6a181347fbc373592c125da4.

[Reporting paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

Recorded evaluation configuration: {"Target Model":"Qwen3-1.7B","Attacker suffixes":"best-of-8"}. This record does not assert independent reproduction.

### BCT

Attack Success Rate (ASR): 92. Result ID: 6a181347fbc373592c125da5.

[Reporting paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

Recorded evaluation configuration: {"Target Model":"Qwen3-1.7B","Attacker suffixes":"best-of-8"}. This record does not assert independent reproduction.

### Baseline

Attack Success Rate (ASR): 94. Result ID: 6a181347fbc373592c125da9.

[Reporting paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

Recorded evaluation configuration: {"Target Model":"Phi-4-reasoning","Attacker suffixes":"best-of-8"}. This record does not assert independent reproduction.

### BCT

Attack Success Rate (ASR): 95. Result ID: 6a181347fbc373592c125da8.

[Reporting paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

Recorded evaluation configuration: {"Target Model":"Qwen3-8B","Attacker suffixes":"best-of-8"}. This record does not assert independent reproduction.

### Baseline

Attack Success Rate (ASR): 98. Result ID: 6a181347fbc373592c125da6.

[Reporting paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

Recorded evaluation configuration: {"Target Model":"Qwen3-8B","Attacker suffixes":"best-of-8"}. This record does not assert independent reproduction.

### ACT

Attack Success Rate (ASR): 99. Result ID: 6a181347fbc373592c125db0.

[Reporting paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

Recorded evaluation configuration: {"Target Model":"Gemma-4-E4B-it","Attacker suffixes":"best-of-8"}. This record does not assert independent reproduction.

### Baseline

Attack Success Rate (ASR): 100. Result ID: 6a181347fbc373592c125da3.

[Reporting paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

Recorded evaluation configuration: {"Target Model":"Qwen3-1.7B","Attacker suffixes":"best-of-8"}. This record does not assert independent reproduction.

### Baseline

Attack Success Rate (ASR): 100. Result ID: 6a181347fbc373592c125dac.

[Reporting paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

Recorded evaluation configuration: {"Target Model":"GPT-OSS-20B","Attacker suffixes":"best-of-8"}. This record does not assert independent reproduction.

### Baseline

Attack Success Rate (ASR): 100. Result ID: 6a181347fbc373592c125daf.

[Reporting paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

Recorded evaluation configuration: {"Target Model":"Gemma-4-E4B-it","Attacker suffixes":"best-of-8"}. This record does not assert independent reproduction.

### BCT

Attack Success Rate (ASR): 100. Result ID: 6a181347fbc373592c125db1.

[Reporting paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a17cc4cdbd7150506f81558.md>)

Recorded evaluation configuration: {"Target Model":"Gemma-4-E4B-it","Attacker suffixes":"best-of-8"}. This record does not assert independent reproduction.

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