Customizing End-User Experience Customizing Attachment Cleaning ( Threat Extraction ) Attachment Name To customize Attachment Cleaning (Threat Extraction) attachment name: Navigate to Security Settings > SaaS Applications. Click Configure for Office 365 Mail or Gmail. Click Advanced and scroll-down to Threat extracted attachment name template. Enter the desired attachment name. Note: By default, threat_extracted_{original_name} is the configured name. Click Save.