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

Virus signatures are primarily associated with traditional antivirus software, which relies on known patterns of malicious code to detect threats. While they are important for endpoint protection, they do not represent a feature of SIEM systems, which focus on broader security data aggregation and analysis rather than specific malware detection.

Security agent deployment pertains more to endpoint protection solutions and the implementation of various security tools across an organization's network. While SIEM systems may utilize data from these agents, the deployment itself is not a characteristic feature of SIEM systems, which focus on data correlation and analysis rather than agent management.

Vulnerability scanning is a proactive security measure employed to identify weaknesses in systems and applications. Although some SIEM systems can integrate vulnerability data, the scanning process is not a core feature of SIEM; rather, it complements the SIEM function by providing additional context for the data being analyzed.