One User, Two UIDs: NFSv4, Kerberos, and Docker on a Domain-Joined TrueNAS
SSSD and TrueNAS gave the same AD user different UIDs. How that showed up as nobody, Permission denied, root:root 755, and "I have no name!", and how we aligned them.
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.