This detection rule, titled 'Potential Attachment Manager Settings Attachments Tamper', is designed to identify unauthorized modifications to the Microsoft Windows Attachment Manager settings in the registry. The rule monitors specific keys within the registry that control how attachments are handled and scanned in the Windows environment. The key focus is on three specific sub-keys: 'HideZoneInfoOnProperties', 'SaveZoneInformation', and 'ScanWithAntiVirus'. Any alterations to these keys, particularly indicative DWORD values such as 0x00000001 for hiding zone info or disabling scanning, suggest potential security evasion by malicious actors. As these settings directly influence the behavior regarding security measures for files received from untrusted sources, tampering with them is a significant attack vector and should be addressed promptly. The detection rule can trigger alarms if it detects tampering, and it carries a high severity level due to the implications of such changes on endpoint security.