Which of the following is the GREATEST risk resulting from a Domain Name System (DNS) cache poisoning attack?

The greatest risk resulting from a DNS cache poisoning attack is the loss of sensitive data. Here’s why:

DNS Cache Poisoning: An attacker corrupts the DNS cache to redirect users from legitimate sites to

malicious ones.

Phishing and Data Theft: Users think they are accessing legitimate websites (like banking portals) but

are unknowingly entering sensitive data into fake sites.

Man-in-the-Middle (MitM) Attacks: Attackers can intercept data traffic, capturing credentials or

personal information.

Data Exfiltration: Once credentials are stolen, attackers can access internal systems, leading to data

loss.

Other options analysis:

A . Reduced system availability: While DNS issues can cause outages, this is secondary to data theft in

poisoning scenarios.

B . Noncompliant operations: While potential, this is not the primary risk.

C . Loss of network visibility: Unlikely since DNS poisoning primarily targets user redirection, not

network visibility.

CCOA Official Review Manual, 1st Edition Reference:

Chapter 4: Network Security Operations: Discusses DNS attacks and their potential consequences.

Chapter 8: Threat Detection and Incident Response: Details how DNS poisoning can lead to data

compromise.