When SIEM detects a potential threat, it generates an alert for the security team to review. Based on that review, the team may decide to take immediate action, prioritize the alert as a lower-level threat, or determine that the alert is a false positive. The accuracy of the context and information the team relies on to make these decisions depends on the quality and completeness of the data and logs gathered by the SIEM solution.
The more contextual data that the SIEM provides, and the more integrated the data is across systems, the more useful it is for threat response. At large organizations, the volume of SIEM alerts — an average of 10,000 per day — can pose challenges to the security team’s ability to evaluate and respond to threats.