Document.VBASigned (Word)

True si project el Microsoft Visual Basic para aplicaciones (VBA) para el documento especificado se ha firmado digitalmente.

Documents.Open FileName:="C:\My Documents\Temp.doc" 
If ActiveDocument.VBASigned = False Then 
 MsgBox "Warning! This document " _ 
 & "has not been digitally signed.", _ 
 vbCritical, "Digital Signature Warning" 
End If