Which of the following is a feature of a next-generation SIEM system?

Next-generation SIEM (Security Information and Event Management) systems go beyond traditional logging and alerting by integrating advanced capabilities like Security Orchestration, Automation, and Response (SOAR). This allows them to not only detect threats but also to initiate automated response actions, such as isolating compromised hosts, blocking malicious IP addresses, or enriching incident data, without human intervention. This significantly reduces response times and improves overall security posture. Virus signatures are a feature of antivirus software, not a primary feature of a SIEM. Security agent deployment is a method for collecting data, but not a core feature of the SIEM's analytical or response capabilities. Vulnerability scanning identifies weaknesses but is typically performed by dedicated vulnerability management tools, though SIEMs may ingest their findings.