This rule detects attempts to modify the User Account Control (UAC) feature by changing the 'PromptOnSecureDesktop' registry value, which determines the presentation layer for UAC elevation prompts. When this value is set to 0, prompts appear on the non-secure desktop instead of the secure desktop, effectively lowering the security barrier against potential malicious manipulation. The secure desktop is aimed at ensuring UAC prompts are not tampered with by malware, and reducing its effectiveness can lead to privilege escalation and other security issues. By monitoring changes to this specific registry setting, organizations can detect potential security risks and respond accordingly. This rule targets Windows systems and requires access to registry data for effective monitoring and alerting on potential unauthorized configurations.