Launch day is the worst time to discover a security problem and the most common time to ship one. Here is the fast pass to run before you hit deploy. It will not make you SOC 2 compliant. It will catch the things that actually get small apps breached.
Secrets: are any in the code?
Search your source and your built bundle for keys, tokens, and high-entropy strings. If a secret was ever committed, rotate it. This one check prevents the most common indie breach.
Data: is your database locked down?
Confirm your Firebase, Supabase, or database rules deny by default and scope access to the owner. Make an unauthenticated request and confirm it fails.
Auth: is it verifying, not just decoding?
Check that tokens are verified, secrets are strong with no defaults, cookies use Secure and SameSite, and sessions expire.
Safe to ship is not a feeling. It is a short list of checks that either pass or do not.
Config: anything left in debug?
No debug mode in production, no source maps served publicly, security headers present, no default credentials. These are careless mistakes, which means they are the easiest to fix.
Make it a habit, not an event
The reason this pass gets skipped is that doing it by hand is tedious. Automate it. A scanner that runs across your source in under a minute and returns a single "safe to ship?" verdict turns launch-day anxiety into a checkbox. That is the entire idea behind IOnclad: ask the question, get an honest answer, before your users do.