Quick Answer
The answer is tailgating, a physical social engineering technique where an attacker follows an authorized person into a restricted area without proper authentication. This attack exploits human courtesy—the authorized individual holds the door open, allowing the attacker to bypass badge readers, PIN pads, or biometric scanners entirely, since no credential validation occurs. On the Certified Ethical Hacker CEH exam, this concept tests your understanding of physical security vectors within the social engineering domain, often appearing in multiple-choice questions that distinguish tailgating from phishing or pretexting. A common trap is confusing tailgating with piggybacking, though the terms are used interchangeably; the key difference is that tailgating implies the authorized person is unaware of the follower, while piggybacking involves implied consent. To remember it, think of the phrase “tail the tailgater”—the attacker literally rides the authorized user’s coattails through the door, making physical access the goal, not digital credentials.
This CEH practice question tests your understanding of malware, social engineering and network attacks. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which of the following is a form of social engineering where an attacker physically follows an authorized person into a restricted area without proper authentication?
Pretexting
Why wrong: Pretexting is fabricating a scenario to obtain information.
Baiting
Why wrong: Baiting involves leaving malware-infected media for victims to find.
Tailgating
Tailgating is physically following someone into a restricted area.
Quid pro quo
Why wrong: Quid pro quo involves offering a service in exchange for information.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Tailgating
Tailgating (also known as piggybacking) is a physical social engineering attack where an unauthorized person follows an authorized individual into a restricted area, bypassing authentication mechanisms such as badge readers, PIN pads, or biometric scanners. The attacker exploits the natural courtesy of the authorized person holding the door open, thereby gaining physical access without any credential validation.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Pretexting
Why it's wrong here
Pretexting is fabricating a scenario to obtain information.
Baiting
Why it's wrong here
Baiting involves leaving malware-infected media for victims to find.
Tailgating
Why this is correct
Tailgating is physically following someone into a restricted area.
Related concept
Read the scenario before looking for a memorised answer.
Quid pro quo
Why it's wrong here
Quid pro quo involves offering a service in exchange for information.
Common exam traps
EC-Council often tests tailgating by contrasting it with pretexting or baiting, so the trap is confusing physical access attacks (tailgating) with psychological manipulation attacks (pretexting, baiting, quid pro quo) that do not require physical proximity.
Trap categories for this question
Scenario analysis trap
Pretexting is fabricating a scenario to obtain information.
Detailed technical explanation
In practice, tailgating often exploits weaknesses in access control systems that lack mantraps or turnstiles; for example, a single door with a badge reader can be defeated if the attacker simply walks close behind the authorized user. Some organizations implement 'anti-tailgating' policies requiring each person to badge in individually, and advanced systems use optical turnstiles or weight sensors to detect multiple entries. In a real-world scenario, an attacker might carry a large box or appear to be a delivery person to avoid suspicion while following an employee through a secured entrance.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
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FAQ
Malware, Social Engineering and Network Attacks — This question tests Malware, Social Engineering and Network Attacks — Read the scenario before looking for a memorised answer..
The correct answer is: Tailgating — Tailgating (also known as piggybacking) is a physical social engineering attack where an unauthorized person follows an authorized individual into a restricted area, bypassing authentication mechanisms such as badge readers, PIN pads, or biometric scanners. The attacker exploits the natural courtesy of the authorized person holding the door open, thereby gaining physical access without any credential validation.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
This CEH practice question is part of Courseiva's free EC-Council certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CEH exam.
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