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N10-009 · Question #225

N10-009 Question #225: Real Exam Question with Answer & Explanation

The correct answer is B: Tailgating. The act of an attacker following an authorized individual through a secure door before it closes is known as tailgating, a common physical security breach.

Submitted by neha2k· Mar 6, 2026Network Security

Question

An attacker follows an employee through a badge-secured door before the door closes. Which of the following types of attacks is occurring?

Options

  • AShoulder surfing
  • BTailgating
  • CPhishing
  • DOn-path

Explanation

The act of an attacker following an authorized individual through a secure door before it closes is known as tailgating, a common physical security breach.

Common mistakes.

  • A. Shoulder surfing involves directly observing someone's screen or keyboard to steal information, which is different from gaining physical access by following someone.
  • C. Phishing is a social engineering attack conducted via electronic communication (e.g., email) to trick individuals into revealing sensitive information, not a method of physical entry.
  • D. On-path, or Man-in-the-Middle, is a type of cyberattack where an attacker intercepts and potentially alters communication between two parties, not a physical access method.

Concept tested. Physical security attacks

Reference. https://learn.microsoft.com/en-us/training/modules/security-best-practices/6-protecting-on-premises-physical-security

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