During an on-site penetration test, an employee scans an access card and walks through a locked entrance. Another individual holding a large box walks behind them and requests help getting inside. Which procedure best prevents unauthorized infiltration?
Ask them to sign a visitor sheet set near the door
Guide them through, then contact the security team by phone
Close the door after scanning your card so the other person must use valid credentials
Allow them to pass if they display a badge on a lanyard
Enforcing a requirement that everyone use their own valid credentials is essential for physical security. Closing the door forces each person to present proper keys instead of relying on another individual's access. Merely relying on a visible badge, escorting them through, or having a visitor log does not confirm legitimate access. Requiring individual validation ensures no unauthorized party slips inside.
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