Project Number 1 in AI Security

Reddit r/ArtificialInteligence Tools
prompt-injection llm-security guardrails open-source python regex-heuristics

Summary

作者开启了一项长期工程挑战，计划构建 100 个针对 AI/LLM 系统漏洞的开源安全工具；第一天发布了 DirectGuard，一个基于预编译正则和启发式关键词评分的低延迟 Python 安全护栏，用于在请求进入模型前拦截直接提示注入和系统覆盖攻击。

​Hi ​I’m embarking on a long-term engineering challenge to build 100 open-source security tools and projects addressing the top vulnerabilities in AI and LLM systems. ​For Day 1 I’m tackling Problem #1: Direct Prompt Injection & System Override Attacks. ​When deploying LLM applications, relying solely on model alignment or running a secondary heavyweight LLM classifier for guardrails introduces unacceptable latency and compute costs Attackers frequently bypass defenses using structural overrides and persona hijacking ​We need a deterministic, sub-millisecond pre-flight inspection layer that catches these patterns before they ever touch the primary model context. ​ and for this ​I built DirectGuard, a lightweight Python based security guardrail designed for low latency overhead and It uses pre-compiled regular expressions and heuristic keyword scoring to intercept malicious override vectors instantly. The project:[https://github.com/venomx943-pixel/AI-Security-Projects.git\] If there any advice to develop myself in AI Security you're welcome
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