Your Vibe-Coded App Works. Until It Doesn't.
You shipped 15 features in a week with Claude Code. Three of them are silently broken, and you won’t find out until you click through the app by hand. Or until a user does. This isn’t a feeling. CodeRabbit’s analysis of 470 GitHub PRs found AI-co-authored code has 1.7x more major issues than human-written code, with logic errors 75% more common. Tenzai tested five AI coding tools by building 15 identical web apps. Zero out of 15 implemented CSRF protection. Zero set security headers. All five tools introduced SSRF vulnerabilities. The bugs that slip through aren’t syntactic. They’re behavioral. AI produces code that runs, passes linting, and looks correct in a diff. The failures show up when a real user clicks through the actual flow. ...