The 'SoftwareUpdate Preferences Modification' rule detects unauthorized changes to macOS Software Update preferences through the use of the 'defaults' command. This technique is often exploited by adversaries to disable critical security updates, thereby evading defenses and potentially compromising the system. The rule queries logs from endpoints to identify instances where the command is invoked with parameters that indicate an attempt to modify the Software Update settings without enabling them. With a medium severity level and a risk score of 47, it aims to capture specific related process activity in a timely manner from data collected via Elastic Defend. False positives are anticipated due to authorized configuration changes made by system administrators or automated tools. The setup requires integration with the Elastic Agent and specific prerequisites for monitoring software update configurations on macOS. This rule is particularly relevant in the context of hunting for malicious activities aimed at undermining system security mechanisms.