This statement is false. Unified Threat Management (UTM) systems require regular updates to their threat databases to maintain their effectiveness in mitigating new and evolving threats. These updates are critical for ensuring that the UTM's various integrated security components, such as the antivirus, intrusion prevention system, and spam filters, have the necessary information to accurately identify and defend against the most recent threats. Neglecting these updates can result in a UTM system that becomes increasingly less capable of protecting against new attacks and vulnerabilities, which would not be consistent with security best practices.