Missing Critical Step in Authentication

Secure authentication relies on following a defined protocol completely. Skipping a step—like not validating a session token, omitting a required cryptographic hash, or failing to check a second factor—creates a gap that attackers can exploit to bypass login protections or launch more effective brute-force attacks. To prevent this, developers must treat authentication algorithms as strict checklists. Each step, from credential presentation to final session establishment, must be implemented and tested. Relying on official libraries and comprehensive security testing helps ensure no critical step is accidentally missing or disabled.