Enhancing LLM security with chain-of-thought fine-tuning

Authored by Melissa Kazemi Rad

Large language models (LLMs) have demonstrated powerful capabilities that render them valuable in different applications, including conversational AI products. It is paramount to ensure the security and reliability of these products by mitigating their vulnerabilities towards malicious user interactions, which can lead to the exposure of great risks as well as reputational repercussions. In this work, we present a comprehensive study on the efficacy of fine-tuning and aligning chain-of-thought (CoT) responses of different LLMs that serve as input moderation guardrails. Our approach involves systematically exploring these tuning methods by leveraging a small set of training data to adapt these models as proxy defense mechanisms to detect malicious inputs and provide a reasoning for their verdicts, thereby preventing the exploitation of conversational agents. We rigorously evaluate the efficacy and robustness of different tuning strategies to generalize across diverse adversarial and malicious query types. Our experimental results outline the potential of alignment processes tailored to a varied range of harmful input queries, even with constrained data resources. These techniques significantly enhance the safety of conversational AI systems and provide a feasible framework for deploying more secure and trustworthy AI-driven interactions.