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CompTIA CySA+ CS0-003 Practice Question

Which of the following is the best Indicator of Compromise (IoC) for detecting a potential data breach?

Malware signature detections
High CPU usage
Failed login attempts
Unusual outbound network traffic

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Answer Description

Unusual outbound network traffic is often the best Indicator of Compromise (IoC) for detecting a potential data breach because it can directly indicate data exfiltration activities. Malware signatures and failed login attempts are also IoCs, but they are more general and may not directly indicate data breaches. High CPU usage could point to various issues, including non-malicious causes like software bugs or intensive legitimate activities.

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CompTIA CySA+ CS0-003

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