The 4 Security Bugs Your AI Copilot Writes Every Single Time

TL;DR AI editors produce syntactically clean code that is semantically insecure The same 4 vulnerability patterns show up across almost every AI-generated codebase They're all fixable in minutes, if you know what to look for I scanned a production app last week. Clean TypeScript, well-organized folders, decent test coverage. The kind of repo that looks like a senior dev wrote it. Also: a hardcoded Stripe API key on line 8 of config.ts . A SQL query built from raw string concatenation. An auth endpoint with zero rate limiting. And a password hash using MD5. The whole thing was built with an AI editor. And none of this is unusual. I've been scanning AI-generated codebases for a while now. The same patterns keep showing up, almost without exception. Not because the developers are bad. they're often quite good. It's because AI models learned from tutorial code, and tutorials never prioritize security. They prioritize clarity. Here are the four things I find most consistently, with the actu