security-and-hardening

Input validation and authentication are applied at system boundaries to secure web applications. This involves enforcing security controls specifically where user input is accepted, sessions are managed, or external services are integrated.

Storing PII or payment data requires proactive security controls including strict input validation, robust authentication, authorization mechanisms, and proper secret hygiene to protect sensitive user information at system boundaries.

Authorization and secret hygiene should be applied whenever building features that accept user input, manage authentication or sessions, store PII, or integrate with external services to ensure proactive boundary security.

Securing external service integrations is best achieved by applying proactive security controls at system boundaries, specifically targeting input validation, authentication, authorization, and secret hygiene for all external data exchanges.

Yes, this security hardening approach works for features managing user sessions by applying targeted authentication, authorization, and secret hygiene controls directly at the system boundaries where sessions are validated.