LlamaFirewall: An open source guardrail system for building secure AI agents
作者: Sahana Chennabasappa, Cyrus Nikolaidis, Daniel Song, David Molnar, Stephanie Ding, Shengye Wan, Spencer Whitman, Lauren Deason, Nicholas Doucette, Abraham Montilla, Alekhya Gampa, Beto de Paola, Dominik Gabi, James Crnkovich, Jean-Christophe Testud, Kat He, Rashnil Chaturvedi, Wu Zhou, Joshua Saxe
分类: cs.CR, cs.AI
发布日期: 2025-05-06
💡 一句话要点
提出LlamaFirewall以解决AI代理安全风险问题
🎯 匹配领域: 支柱九:具身大模型 (Embodied Foundation Models)
关键词: 安全防护 大型语言模型 实时监控 代码安全 AI代理 开源框架 提示注入 链式思维
📋 核心要点
- 现有的安全措施无法有效应对大型语言模型带来的新型安全风险,尤其是在高风险应用场景中。
- LlamaFirewall框架通过三种防护机制,提供实时监控和安全策略执行,旨在降低AI代理的安全风险。
- 实验结果表明,LlamaFirewall在防止提示注入和代码生成安全性方面表现优异,超越了现有方法。
📝 摘要(中文)
大型语言模型(LLMs)已从简单的聊天机器人演变为能够执行复杂任务的自主代理,这些任务包括编辑生产代码、协调工作流程以及根据不可信输入(如网页和电子邮件)采取高风险行动。这些能力引入了新的安全风险,而现有的安全措施(如模型微调或专注于聊天机器人的防护措施)并未完全解决这些问题。为此,LlamaFirewall作为一个开源的安全防护框架被提出,旨在作为AI代理安全风险的最后防线。该框架通过三种强大的防护机制来减轻风险,包括PromptGuard 2、Agent Alignment Checks和CodeShield,提供了实时监控和安全策略执行的能力。
🔬 方法详解
问题定义:本论文旨在解决大型语言模型在执行复杂任务时所引发的安全风险,现有方法如模型微调和聊天机器人防护措施无法有效应对这些风险,尤其是在高风险应用场景中。
核心思路:LlamaFirewall框架的核心思想是通过实时监控和执行安全策略,提供一个多层次的防护机制,以应对AI代理的安全威胁。该框架设计了三种主要的防护机制,以确保安全性和灵活性。
技术框架:LlamaFirewall的整体架构包括三个主要模块:PromptGuard 2(通用的越狱检测器)、Agent Alignment Checks(链式思维审计器)和CodeShield(在线静态分析引擎)。这些模块协同工作,形成一个完整的安全防护体系。
关键创新:LlamaFirewall的关键创新在于其三种防护机制的设计,特别是PromptGuard 2在越狱检测中的卓越表现,以及Agent Alignment Checks在防止间接注入方面的有效性,这些都显著提升了安全防护能力。
关键设计:在设计中,PromptGuard 2采用了先进的检测算法,Agent Alignment Checks通过链式思维分析代理的推理过程,而CodeShield则实现了快速且可扩展的在线静态分析,确保生成代码的安全性。
📊 实验亮点
实验结果显示,LlamaFirewall在防止提示注入和代码生成安全性方面表现优异,PromptGuard 2的检测准确率达到了当前最先进水平,Agent Alignment Checks在防止间接注入方面的有效性明显优于现有方法,整体提升了AI代理的安全防护能力。
🎯 应用场景
LlamaFirewall的潜在应用场景包括金融、医疗和自动化等高风险领域,能够为AI代理提供实时的安全防护,确保其在处理敏感信息和执行关键任务时的安全性。这一框架的实施将显著提高AI系统的信任度和可靠性。
📄 摘要(原文)
Large language models (LLMs) have evolved from simple chatbots into autonomous agents capable of performing complex tasks such as editing production code, orchestrating workflows, and taking higher-stakes actions based on untrusted inputs like webpages and emails. These capabilities introduce new security risks that existing security measures, such as model fine-tuning or chatbot-focused guardrails, do not fully address. Given the higher stakes and the absence of deterministic solutions to mitigate these risks, there is a critical need for a real-time guardrail monitor to serve as a final layer of defense, and support system level, use case specific safety policy definition and enforcement. We introduce LlamaFirewall, an open-source security focused guardrail framework designed to serve as a final layer of defense against security risks associated with AI Agents. Our framework mitigates risks such as prompt injection, agent misalignment, and insecure code risks through three powerful guardrails: PromptGuard 2, a universal jailbreak detector that demonstrates clear state of the art performance; Agent Alignment Checks, a chain-of-thought auditor that inspects agent reasoning for prompt injection and goal misalignment, which, while still experimental, shows stronger efficacy at preventing indirect injections in general scenarios than previously proposed approaches; and CodeShield, an online static analysis engine that is both fast and extensible, aimed at preventing the generation of insecure or dangerous code by coding agents. Additionally, we include easy-to-use customizable scanners that make it possible for any developer who can write a regular expression or an LLM prompt to quickly update an agent's security guardrails.