Sub Obfuscate()
    Dim osld   As Slide
    Dim oshp   As Shape
    Dim iRow   As Integer
    Dim iCol   As Integer
    Dim wrd    As Long
    Dim otxTemp As TextRange

    For Each osld In ActivePresentation.Slides
        For Each oshp In osld.Shapes
            If oshp.HasTable Then
                For iRow = 1 To oshp.Table.Rows.Count
                    For iCol = 1 To oshp.Table.Columns.Count
                        If oshp.Table.Cell(iRow, iCol).Shape.HasTextFrame Then
                            If oshp.Table.Cell(iRow, iCol).Shape.TextFrame.HasText Then
                                Set otxTemp = oshp.Table.Cell(iRow, iCol).Shape.TextFrame.TextRange
                                For wrd = 1 To otxTemp.Words.Count
                                    otxTemp.Words(wrd) = String$(Len(Trim(otxTemp.Words(wrd))), "*") & " "
                                    Next wrd
                            End If
                        End If
                    Next iCol
                Next iRow
            Else
                If oshp.HasTextFrame Then
                    If oshp.TextFrame.HasText Then
                        Set otxTemp = oshp.TextFrame.TextRange
                        For wrd = 1 To otxTemp.Words.Count
                            otxTemp.Words(wrd) = String$(Len(Trim(otxTemp.Words(wrd))), "*") & " "
                        Next wrd
                    End If
                End If
            End If
        Next oshp
    Next osld
End Sub