An unknown source has attacked an organization's network multiple times. The organization has a firewall but no other source of protection against these attacks. Which of the following is the best security item to add?

A Security Information and Event Management (SIEM) system is valuable for collecting, analyzing, and correlating security events from various sources. However, in a situation where immediate protection against ongoing attacks is crucial, an IPS would be more suitable as it actively prevents and detects intrusions.

A load balancer distributes incoming network traffic across multiple servers to ensure efficient resource utilization and prevent server overload. While it is essential for optimizing server performance and availability, a load balancer does not offer the security functionalities needed to counteract repeated attacks.

Unified Threat Management (UTM) devices combine multiple security features such as firewall, antivirus, intrusion detection, and content filtering into a single appliance. While UTM solutions provide comprehensive protection, an intrusion prevention system like IPS specifically focuses on identifying and blocking malicious activities in real-time.