You know that peaceful moment right before bed when your brain decides to casually remind you that your AWS credentials, database passwords, and every secret token you've ever used are now immortalized in your public GitHub repo's commit history? Yeah, sweet dreams. The real kicker? Deleting the file in a new commit doesn't help. Git remembers everything. Forever. You'll need to rewrite history, rotate every single key, pray nobody's already scraped your repo, and explain to your team why the entire CI/CD pipeline just exploded at 2 AM. Pro tip: .gitignore and environment variables exist for a reason. Also, GitHub now has secret scanning that'll email you faster than you can say "I've made a huge mistake."