This detection rule identifies when Google Workspace administrative settings are modified to allow any application from the Google Marketplace, which presents a significant security risk. Adversaries might exploit this configuration to enable malware through applications that typically wouldn't be allowed. The rule triggers when events indicate a change in the policy regarding application access, specifically when the setting 'Apps Access Setting Allowlist access' is changed to 'ALLOW_ALL'. Essential investigative steps include examining user account details and reviewing permissions of applications added post-modification. Given the risk associated with allowing unrestricted application installations, administrators must respond swiftly to assess compliance with organizational policies and ensure that appropriate security measures are in place to prevent unauthorized application access.