Show HN: TheAuditor – Offline security scanner for AI-generated code https://ift.tt/yDR9ZLC

Show HN: TheAuditor – Offline security scanner for AI-generated code I'm an infrastructure architect who started using AI assistants to write code 3 months ago. After building several systems with Claude, I noticed a pattern: the code always had security issues I could spot from my ops background, but I couldn't fix them myself since I can't actually write code. Why I built this: I needed a way to verify AI-generated code was production-safe. Existing tools either required cloud uploads (privacy concern) or produced output too large for AI context windows. TheAuditor solves both problems - it runs completely offline and chunks findings into 65KB segments that fit in Claude/GPT-4 context limits. What I discovered: Testing on real projects, TheAuditor consistently finds 50-200+ vulnerabilities in AI-generated code. The patterns are remarkably consistent: - SQL queries using f-strings instead of parameterization - Hardcoded secrets (JWT_SECRET = "secret" appears in nearly every project) - Missing authentication on critical endpoints - Rate limiting using in-memory storage that resets on restart Technical approach: TheAuditor runs 14 analysis phases in parallel, including taint analysis (tracking data from user input to dangerous sinks), pattern matching against 100+ security rules, and orchestrating industry tools (ESLint, Ruff, MyPy, Bandit). Everything outputs to structured JSON optimized for LLM consumption. Interesting obstacle: When scanning files with vulnerabilities, antivirus software often quarantines our reports because they contain "malicious" SQL injection patterns - even though we're just documenting them. Had to implement pattern defanging to reduce false positives. Current usage: Run aud full in any Python/JS/TS project. It generates a complete security audit in .pf/readthis/. The AI can then read these reports and fix its own vulnerabilities. I've seen projects go from 185 critical issues to zero in 3-4 iterations. The tool is particularly useful if you're using AI assistants for production code but worry about security. It provides the "ground truth" that AI needs to self-correct. Would appreciate feedback on: - Additional vulnerability patterns common in AI-generated code - Better ways to handle the antivirus false-positive issue - Integration ideas for different AI coding workflows Thanks for taking a look! /TheAuditorTool https://ift.tt/kontaMW September 8, 2025 at 01:28AM