I Built an AI Security Scanner in an Afternoon. Here's What I Actually Learned

The author built a CLI security scanner using Google's Gemini API to analyze Python code for vulnerabilities like SQL injection, sharing that while AI-powered scanning exceeded expectations in understanding code context compared to pattern-matching tools like Bandit, it still has limitations. The project uses a simple stack (Python, google-generativeai SDK, python-dotenv, colorama) and serves as both a practical tool and a prompt engineering learning exercise.