New Lesson Dropping today, you guessed it: Security.
"Everyone has a plan until they get punched in the mouth." — Mike Tyson
That's what happens the moment you realize your API keys are sitting in a public GitHub repo. Or your .env file got pushed with your last commit. Or your n8n webhook URL is wide open with zero auth.
You had a plan. Now you have a problem.
Here's what nobody tells beginners about working with AI tools:
The security failure isn't the breach. The security failure is not knowing what to lock down before you start building.
Every time you spin up a new workflow, connect an API, or deploy an agent, you're handling keys that can cost you real money, expose client data, or burn a business relationship permanently.
The Lockdown Checklist:
→ .gitignore your .env file BEFORE your first commit. Not after. Before.
→ Never hardcode API keys. Environment variables only.
→ Rotate any key you even suspect was exposed. Don't debate it. Rotate it.
→ Webhook URLs get authentication. Every. Single. Time.
→ If you're using n8n, Claude, or any API — check what permissions that key actually grants. Most people never look.
The punch in the mouth isn't if. It's when.
The only question is whether you built the muscle memory to respond in seconds instead of hours.
Lock it down first. Build second.
When's the last time you actually audited your own setup? Not "I think it's fine" — when did you last look?