The alert rule identifies unauthorized modifications to the Google Workspace Marketplace blocklist by administrators. This could indicate a potential security risk, as it allows previously blocked applications back into the environment, creating opportunities for malicious use. The rule captures events where an admin changes an application's block status, flagging the event if an application transitions from 'blocked' to 'allowed'. It also emphasizes the importance of verifying any administrative actions against expected behavior, especially considering that Google Workspace Marketplace applications can require extensive permissions. Administrators should investigate accounts associated with such changes, assess the context and necessity of the modifications, and adhere to security best practices to mitigate risks from unwanted application access. The rule's findings can aid in detecting defense evasion tactics, where adversaries might seek to reinstate access to malicious applications that had been previously blocked.