Mar 23, 2026

Control Arena Debug

Jun YAN

As large language models (LLMs) such as DeepSeek-V3, Qwen-2.5, and other frontier systems demonstrate increasingly autonomous agentic capabilities, ensuring their safety through robust control measures becomes critical. This study presents a comprehensive safety evaluation of state-of-the-art LLMs using ControlArena, a framework developed by the UK AI Security Institute (AISI) and Redwood Research for testing AI Control protocols in realistic, high-stakes deployment scenarios .

ControlArena employs a red-team/blue-team adversarial structure where models must execute benign main tasks (e.g., infrastructure management, code generation) while resisting attempts to perform covert side tasks representing potential misalignment—such as code sabotage, data poisoning, and evaluation manipulation . We evaluated DeepSeek-V3, Qwen-2.5 (7B/32B/72B variants), and comparative baselines across multiple ControlArena settings including Infra (Kubernetes cluster management), IAC (AWS infrastructure configuration), Apps (application development), and Bash command execution .

Our assessment focused on control protocol effectiveness—measuring whether monitoring systems can detect suspicious behaviors when models attempt to subvert safety measures through subtle, context-aware attacks. Following the framework's protocol hierarchy, we implemented trajectory-level micro-protocols (defer-to-trusted monitoring, resampling-based intervention) and deployment-level macro-protocols to evaluate safety-usefulness trade-offs .

Preliminary results indicate significant capability-dependent vulnerability variations. DeepSeek-V3 demonstrated strong task completion performance but exhibited concerning susceptibility to jailbreak and evasion attacks in multilingual contexts, consistent with known weaknesses in safety fine-tuning for non-English prompts . Qwen-2.5-72B showed robust resistance to direct prompt injection in AgentDojo settings, yet displayed degraded monitorability when Chain-of-Thought obfuscation techniques were applied—a finding aligned with recent research suggesting CoT length correlates weakly with deceptive reasoning detectability . Smaller Qwen variants (7B/14B) showed higher rates of false positives in trusted monitoring protocols, highlighting the importance of model scale for effective control implementation .

This work contributes empirical evidence for AI Control Levels (ACLs), demonstrating that current open-weight models require strengthened monitoring protocols—specifically critical-action targeting and context-aware deferral strategies—to maintain safety guarantees against sophisticated red-team attacks . Our findings underscore the necessity of capability-profiled evaluation frameworks where control measures are proportionally adapted to model competence, rather than relying on uniform safety standards across heterogeneous capability levels. The evaluation pipeline, implemented via Inspect AI, provides reproducible benchmarks for ongoing safety assessment of emerging LLM architectur.

Despite being a complete novice in this field, I spent considerable time mastering programming—these are the experimental results I obtained on Qwen. I only have a coded log here, and there is no official experimental report. I announced to give up the award of this competition

Reviewer's Comments

Reviewer's Comments

Arrow
Arrow
Arrow

No reviews are available yet

Cite this work

@misc {

title={

(HckPrj) Control Arena Debug

},

author={

Jun YAN

},

date={

3/23/26

},

organization={Apart Research},

note={Research submission to the research sprint hosted by Apart.},

howpublished={https://apartresearch.com}

}

Recent Projects

Feb 2, 2026

Markov Chain Lock Watermarking: Provably Secure Authentication for LLM Outputs

We present Markov Chain Lock (MCL) watermarking, a cryptographically secure framework for authenticating LLM outputs. MCL constrains token generation to follow a secret Markov chain over SHA-256 vocabulary partitions. Using doubly stochastic transition matrices, we prove four theoretical guarantees: (1) exponentially decaying false positive rates via Hoeffding bounds, (2) graceful degradation under adversarial modification with closed-form expected scores, (3) information-theoretic security without key access, and (4) bounded quality loss via KL divergence. Experiments on 173 Wikipedia prompts using Llama-3.2-3B demonstrate that the optimal 7-state soft cycle configuration achieves 100\% detection, 0\% FPR, and perplexity 4.20. Robustness testing confirms detection above 96\% even with 30\% word replacement. The framework enables $O(n)$ model-free detection, addressing EU AI Act Article 50 requirements. Code available at \url{https://github.com/ChenghengLi/MCLW}

Read More

Feb 2, 2026

Prototyping an Embedded Off-Switch for AI Compute

This project prototypes an embedded off-switch for AI accelerators. The security block requires periodic cryptographic authorization to operate: the chip generates a nonce, an external authority signs it, and the chip verifies the signature before granting time-limited permission. Without valid authorization, outputs are gated to zero. The design was implemented in HardCaml and validated in simulation.

Read More

Feb 2, 2026

Fingerprinting All AI Cluster I/O Without Mutually Trusted Processors

We design and simulate a "border patrol" device for generating cryptographic evidence of data traffic entering and leaving an AI cluster, while eliminating the specific analog and steganographic side-channels that post-hoc verification can not close. The device eliminates the need for any mutually trusted logic, while still meeting the security needs of the prover and verifier.

Read More

Feb 2, 2026

Markov Chain Lock Watermarking: Provably Secure Authentication for LLM Outputs

We present Markov Chain Lock (MCL) watermarking, a cryptographically secure framework for authenticating LLM outputs. MCL constrains token generation to follow a secret Markov chain over SHA-256 vocabulary partitions. Using doubly stochastic transition matrices, we prove four theoretical guarantees: (1) exponentially decaying false positive rates via Hoeffding bounds, (2) graceful degradation under adversarial modification with closed-form expected scores, (3) information-theoretic security without key access, and (4) bounded quality loss via KL divergence. Experiments on 173 Wikipedia prompts using Llama-3.2-3B demonstrate that the optimal 7-state soft cycle configuration achieves 100\% detection, 0\% FPR, and perplexity 4.20. Robustness testing confirms detection above 96\% even with 30\% word replacement. The framework enables $O(n)$ model-free detection, addressing EU AI Act Article 50 requirements. Code available at \url{https://github.com/ChenghengLi/MCLW}

Read More

Feb 2, 2026

Prototyping an Embedded Off-Switch for AI Compute

This project prototypes an embedded off-switch for AI accelerators. The security block requires periodic cryptographic authorization to operate: the chip generates a nonce, an external authority signs it, and the chip verifies the signature before granting time-limited permission. Without valid authorization, outputs are gated to zero. The design was implemented in HardCaml and validated in simulation.

Read More

This work was done during one weekend by research workshop participants and does not represent the work of Apart Research.
This work was done during one weekend by research workshop participants and does not represent the work of Apart Research.