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EC-Council

312-50V13 · Question #163

You went to great lengths to install all the necessary technologies to prevent hacking attacks, such as expensive firewalls, antivirus software, anti-spam systems and intrusion detection/prevention to

The correct answer is A. Untrained staff or ignorant computer users who inadvertently become the weakest link in your. Despite advanced security technologies, human factors like untrained staff or user ignorance often create the most significant vulnerabilities in an organization's security posture.

Submitted by jakub_pl· Mar 6, 2026Social Engineering

Question

You went to great lengths to install all the necessary technologies to prevent hacking attacks, such as expensive firewalls, antivirus software, anti-spam systems and intrusion detection/prevention tools in your company's network. You have configured the most secure policies and tightened every device on your network. You are confident that hackers will never be able to gain access to your network with complex security system in place. Your peer, Peter Smith who works at the same department disagrees with you. He says even the best network security technologies cannot prevent hackers gaining access to the network because of presence of "weakest link" in the security chain. What is Peter Smith talking about?

Options

  • AUntrained staff or ignorant computer users who inadvertently become the weakest link in your
  • B"zero-day" exploits are the weakest link in the security chain since the IDS will not be able to
  • C"Polymorphic viruses" are the weakest link in the security chain since the Anti-Virus scanners will
  • DContinuous Spam e-mails cannot be blocked by your security system since spammers use

How the community answered

(39 responses)
  • A
    90% (35)
  • B
    3% (1)
  • C
    3% (1)
  • D
    5% (2)

Why each option

Despite advanced security technologies, human factors like untrained staff or user ignorance often create the most significant vulnerabilities in an organization's security posture.

AUntrained staff or ignorant computer users who inadvertently become the weakest link in yourCorrect

Peter Smith is referring to the human element, often called the 'human firewall.' Untrained or ignorant computer users are susceptible to social engineering attacks, phishing, or simply making mistakes that can inadvertently compromise security, regardless of the robust technical defenses in place.

B"zero-day" exploits are the weakest link in the security chain since the IDS will not be able to

While 'zero-day' exploits are severe technical vulnerabilities, they are not typically what is referred to as the 'weakest link' in the human sense that Peter's statement implies, and security systems do evolve to mitigate them.

C"Polymorphic viruses" are the weakest link in the security chain since the Anti-Virus scanners will

'Polymorphic viruses' represent a technical challenge for antivirus software, but they are a form of malware and not the 'weakest link' in terms of human behavior or error that the question describes.

DContinuous Spam e-mails cannot be blocked by your security system since spammers use

The inability to block all spam emails, while a security concern, points to a technical challenge and user susceptibility to phishing, but the statement about the 'weakest link' generally refers to the inherent human vulnerability rather than just the volume of spam.

Concept tested: Human element in cybersecurity

Source: https://learn.microsoft.com/en-us/training/modules/protect-against-phishing/5-social-engineering

Topics

#Human factor#Security awareness#Social engineering#Weakest link

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