Thegreatest risk resulting from a DNS cache poisoning attackis theloss 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 References:
* 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.