That's an excellent point. I just switched from Sophos to Avast, and Avast was messing with my email app. When I get home I'll try turning off Avast.
When I install EN, I get no security requests. That file access just happened on its own. If Avast is not the issue, I'll add EN to the other security categories, though they mostly seem unnecessary, like screen monitoring, at least without Web Clipper, Skitch etc. being used. But certainly worth a shot.
Will report back once I've tried these fixes. Thanks.