Isaca CISM Question Answer
Which of the following is the MOST common cause of cybersecurity breaches?
Lack of adequate password rotation
Human error
Abuse of privileged accounts
Lack of control baselines
Human error remains the leading cause of cybersecurity breaches, including mishandling data, misconfigurations, and falling for phishing attacks.
“Human error continues to be one of the most common causes of data breaches and security incidents.”
— CISM Review Manual 15th Edition, Chapter 4: Incident Management, Section: Root Cause Analysis*
TESTED 23 Dec 2025
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