How do I shut up Norton Security Services!

Since enabling Norton Security Services, so that it scans Apps, I am getting a voice announcement when I select a message in the EMail App for deletion ("CHECKED" or "NOT CHECKED").

This stops when I disable Norton Security Services but I cannot find any other control over it.   Also not affected by volum control.

This is only on the tablet and not the mobile phone even though they seem to be set the same.

Any way to shut it up?