Secure configuration means setting systems up with safer defaults, limited privileges, and only the services, ports, and features that are actually needed. It is part of hardening: reducing the attack surface before an attacker can take advantage of weak settings.
In cyber security, insecure configuration is a common entry point. Exposed admin panels, default passwords, unnecessary remote access, weak logging, and unpatched or over-permissive cloud settings can all turn a normal system into an easy target. Secure configuration helps defenders by making compromise harder, limiting blast radius, and improving visibility when something goes wrong. In procurement and large programs, it should be required from the start, because retrofitting safe settings after deployment is slower, costlier, and often incomplete.