The best technical decisions start with a clear understanding of risk, practical constraints and expected outcomes. This guide outlines principles you can discuss with your team and adapt to your own environment.
Know what you expose
Maintain an inventory of public applications, APIs, administrative interfaces and third-party integrations. Keep a named owner and update schedule for each significant system.
Protect identities and sessions
Use multi-factor authentication where appropriate, secure cookies, session expiry and effective account recovery controls. Implement server-side authorization for every sensitive object and action.
Design for untrusted input
Validate inputs on the server, use parameterized queries, encode output in its context and protect upload workflows. Do not rely solely on browser-side validation.
Build a dependable release process
Review dependency updates, protect secrets, run automated checks and schedule targeted manual reviews for complex business logic. Preserve the ability to roll back safely.