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hardmultiple choiceObjective-mapped

During passive reconnaissance, a penetration tester wants to compile a list of valid employee email addresses for a target company to be used in a future phishing campaign. Which technique is LEAST likely to be detected by the target or its security controls?

Question 1hardmultiple choice
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During passive reconnaissance, a penetration tester wants to compile a list of valid employee email addresses for a target company to be used in a future phishing campaign. Which technique is LEAST likely to be detected by the target or its security controls?

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Answer choices

Why each option matters

Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.

A

Distractor review

Using theHarvester to search public sources

theHarvester queries search engines and public databases; while passive, it may still generate measurable search volume, but it is less stealthy than mining GitHub.

B

Distractor review

Sending probe emails to validate addresses

Sending any email to a target's mail server is an active technique that can trigger mail server logs, bounce detection, or alert the security team.

C

Distractor review

Scraping LinkedIn profiles for email patterns

Scraping LinkedIn is more active than passive; it can lead to rate limiting, account blocks, and potential detection by LinkedIn's anti-scraping measures.

D

Best answer

Mining GitHub repositories for company email patterns

Searching public GitHub repositories for email addresses is a purely passive activity with no direct interaction with the target, making it the least likely to be detected.

Common exam trap

Common exam trap: NAT rules depend on direction and matching traffic

NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.

Technical deep dive

How to think about this question

NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.

KKey Concepts to Remember

  • Static NAT maps one inside address to one outside address.
  • PAT allows many inside hosts to share one public address using ports.
  • Inside local and inside global describe the private and translated addresses.
  • NAT ACLs identify traffic for translation, not always security filtering.

TExam Day Tips

  • Identify inside and outside interfaces first.
  • Check whether the scenario needs static NAT, dynamic NAT or PAT.
  • Do not confuse NAT matching ACLs with normal packet-filtering intent.

Related practice questions

Related PT0-002 practice-question pages

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More questions from this exam

Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.

Question 1

A penetration tester is writing the executive summary for a report. The client's CEO needs to understand the business impact of a critical SQL injection vulnerability. Which of the following should the tester include?

Question 2

A penetration tester has gained a low-privileged shell on a Linux server. During enumeration, the tester discovers a binary with the SUID bit set that belongs to root and is known to have a buffer overflow vulnerability. What is the MOST effective next step to escalate privileges?

Question 3

A penetration tester is performing passive reconnaissance against a target domain. Which of the following resources can be used to gather information about the target without directly sending packets to the target's network? (Select two.) (Choose 2.)

Question 4

A penetration tester has obtained a TGT from a domain controller by cracking the krbtgt hash. Which attack can the tester now perform to gain persistent administrative access to any resource in the domain?

Question 5

A penetration tester is writing the executive summary for the final report. The CEO needs to understand the overall risk level and the business impact of the findings. Which of the following should be included in the executive summary?

Question 6

A penetration tester is writing the executive summary of a penetration test report. Which of the following elements is MOST important to include for a non-technical audience?

FAQ

Questions learners often ask

What does this PT0-002 question test?

Static NAT maps one inside address to one outside address.

What is the correct answer to this question?

The correct answer is: Mining GitHub repositories for company email patterns — Mining GitHub repositories involves searching public code repositories for email addresses that may have been committed by employees. This is a passive activity that does not interact with the target's systems or networks, making it the least likely to be detected. The other options involve either active probing (sending emails) or scraping services that might trigger rate limits or logging.

What should I do if I get this PT0-002 question wrong?

Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.

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