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Server-side, centralized authorization is the robust approach. Client-side checks or obscurity (D) are weak. UUIDs help but don’t replace proper checks.

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Server-side, centralized authorization is the robust approach. Client-side checks or obscurity (D) are weak. UUIDs help but don’t replace proper checks.

The web server has file descriptors exposed — check application logs.

phpinfo() was enabled — check phpinfo output.

The process is running as root - check /etc/passwd.

STDIN was readable — check access logs and the last request headers (access.log).

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