Microsoft Powerpoint file types (pot, ppt) are mainly associated with PowerPoint, Microsoft Corporation, Powerpoint.Template , PowerPoint.Template.7 , PowerPoint.Template.8 , PowerPointViewer.Template.11, and with the following MIME types: application/vnd.ms-powerpoint [official] application/mspowerpoint, application/x-mspowerpoint, application/powerpoint, application/x-powerpoint, application/x-dos_ms_powerpnt, application/pot, application/x-soffic, application/vnd.ms-powerpoint [official], application/mspowerpoint, application/ms-powerpoint, application/mspowerpnt, application/vnd-mspowerpoint application/powerpoint, application/x-powerpoint, application/x-m.

This SonicWALL signature identifies HTTP downloads of Content-Type: application/ms-powerpoint.