 Understanding the Question:

The question asks which tool is best for aggregating data from multiple systems to identify abnormal behavior.

 Analyzing the Options:

A. Cyber threat intelligence:Provides information on potential threats but does not aggregate data from multiple systems for behavior analysis.

B. Anti-malware software:Focuses on detecting and removing malware, not aggregating data from multiple sources.

C. Endpoint detection and response (EDR):Monitors endpoints for suspicious activity but is more limited in scope compared to SIEM systems.

D. SIEM systems:Security Information and Event Management systems collect, aggregate, and analyze data from various sources to identify and respond to abnormal behavior.



SIEM Systems:SIEM systems are designed to aggregate and analyze security data from multiple sources such as network devices, servers, and applications. They provide real-time analysis of security alerts generated by hardware and software.

Functionality:SIEM systems use advanced analytics to correlate data from different sources and detect patterns that indicate abnormal behavior. This makes them highly effective in identifying and responding to security incidents.