Traffic, storage, sessions, and payments.
TLS/HTTPS for all traffic before launch; redirect HTTP to HTTPS and enable HSTS.
No raw credit card collection; Stripe-hosted invoices/checkout only.
Production database encrypted at rest with field-level encryption for sensitive PII.
HttpOnly, Secure, SameSite cookies for sessions; short-lived tokens and rotation.
Passwordless magic links or strong password hashing with Argon2/bcrypt if passwords are used.
Role-based access control for owner vs guest accounts plus audit logs for every status/data change.