Misconfiguration is one of the most common and preventable causes of security breaches, and mobile devices amplify this risk due to their ubiquity and inconsistent management. In this episode, we examine how open ports, default credentials, permissive access policies, or misaligned firewall rules can leave cloud environments, web servers, and enterprise applications exposed. We also look at mobile-specific risks including jailbroken devices, sideloaded apps, unencrypted storage, and insecure communication channels that evade enterprise visibility. These vulnerabilities often stem from convenience-based choices, lack of standardized configuration baselines, or poor inventory tracking. Whether it’s a misconfigured S3 bucket leaking data or a mobile device bypassing MDM controls, attackers prey on gaps between intent and implementation. We discuss strategies like configuration management databases (CMDBs), policy enforcement, and mobile endpoint hardening to close these gaps. Effective defense starts with knowing exactly how systems are configured—and ensuring they stay that way.