Which of the following BEST protects against emerging advanced persistent threat (APT) actors?

Proactive monitoring (e.g., threat hunting, real-time log analysis, anomaly detection) is the most effective defense against Advanced Persistent Threats (APTs), which are stealthy, well-resourced, and long-term attacks.

APT actors:

Use zero-day exploits

Maintain long-term unauthorized access

Avoid detection

Traditional controls often fail. Proactive monitoring detects anomalies early, allowing for faster mitigation.

“Ongoing monitoring and detection programs are essential for identifying and responding to persistent and evolving threats.”

— CISM Review Manual 15th Edition, Chapter 4: Threat Management, Section: APT Detection Techniques*