A security analyst receives an alert from the company's SIEM that anomalous activity is coming from a local source IP address of 192.168.34.26. The Chief Information Security Officer asks the analyst to block the originating source. Several days later another employee opens an internal ticket stating that vulnerability scans are no longer being performed properly. The IP address the employee provides is 192.168.34.26. Which of the following describes this type of alert?
Correct Answer: C
Explanation
Traditional SIEM Log Analysis
Traditionally, the SIEM used two techniques to generate alerts from log data: correlation rules, specifying a sequence of events that indicates an anomaly, which could represent a security threat, vulnerability or active security incident; and vulnerabilities and risk assessment, which involves scanning networks for known attack patterns and vulnerabilities. The drawback of these older techniques is that they generate a lot of false positives, and are not successful at detecting new and unexpected event types