During the development phase of a website or application that uses Facebook Login APIs, developers might log raw HTTP requests and responses to troubleshoot authentication errors. If these scripts are pushed to a live production environment without removing the logging function, credentials pass into public log files in plaintext. The Risks of Exposing Authentication Logs
It’s natural to ask: Who would ever put a password log online? The answer is rarely malice—it’s almost always or misconfiguration .
Logs should never reside in a publicly accessible directory. On a Linux server:
MFA ensures that even if an attacker discovers your username and password via an exposed log file, they cannot access your account without a secondary verification code.