This detection rule targets DNS queries associated with subdomains linked to the MEGA online file storage and sharing service, specifically focusing on the query name 'userstorage.mega.co.nz'. The rule is defined for the Windows DNS Client and looks for Event ID 3008, which logs DNS queries on Windows systems. The requirement for this rule to function includes having the Microsoft-Windows-DNS Client Events/Operational Event Log enabled, allowing the necessary logging of DNS activities to detect potential unauthorized data exfiltration attempts via MEGA. This could indicate that a user is attempting to store or transfer data using MEGA's platform, which is often scrutinized in corporate environments for compliance and data loss prevention. False positives may arise from legitimate user activities involving MEGA, so careful interpretation of the alerts generated by this rule is necessary.