Question 65

Unskilled attacker

An unskilled attacker is most likely responsible for the ARP poisoning occurring on the network. Such attacks often stem from individuals with limited knowledge who utilize readily available tools to exploit vulnerabilities in the network.

A) Unskilled attacker

This option is correct because ARP poisoning is a technique that can be easily executed by individuals who may not possess advanced hacking skills. The nature of the attack suggests a lack of sophistication typical of an unskilled attacker who might not understand the full implications of their actions.

B) Shadow IT

Shadow IT refers to the use of unauthorized devices or applications within an organization. While it can pose security risks, it does not directly correlate with ARP poisoning, which is a specific type of network attack. Thus, this option is not relevant to the scenario presented.

C) Credential stuffing

Credential stuffing involves using stolen usernames and passwords to gain unauthorized access to accounts. This technique does not relate to ARP poisoning, as it targets user credentials rather than manipulating network traffic. Therefore, this option is not applicable in this context.

D) DMARC failure

DMARC (Domain-based Message Authentication, Reporting, and Conformance) is a protocol used to prevent email spoofing, not a technique related to network attacks like ARP poisoning. A DMARC failure would not explain the observed network issue, making this choice incorrect.

Conclusion

The identification of an unskilled attacker as the most likely culprit aligns with the characteristics of ARP poisoning, which is often executed by those with limited expertise. Other options fail to address the specific nature of the attack, thereby reinforcing that an unskilled attacker is the most plausible explanation for the malicious activity observed.