Where GitGuardian wins
If your priority is catching secrets across a large organization, including secrets buried deep in git history and across hundreds of repositories, GitGuardian is purpose-built for it. Its history scanning, alerting, and remediation workflow for leaked credentials are strong and battle-tested.
Where Prbl is different
A leaked secret is one of several ways AI-generated code goes wrong, not the whole story. Prbl treats the hardcoded key as a starting point, then checks the rest of what AI tools ship: missing authentication on scaffolded routes, fallback secrets in environment lookups, injection, weak password hashing, and Broken Object Level Authorization. It also scans your deployed app from the outside, so it can catch an exposed key or an open Supabase table that never appears in your repository at all.
Run both
These complement each other cleanly. GitGuardian is your secrets net across the whole org; Prbl is the AI-code security check on the app itself, repo and live URL. Teams shipping fast with AI assistants get more coverage running both than from either one.