If you are using the SharePoint connection, it is just using your own browser’s existing connection to SharePoint, so there is no security or certification testing from our app.
If you are not using SharePoint, then all attachments are stored inside Business Central.
DocXtender is just giving a drag & drop interface for attachments. The actual storage of those attachments is a base Microsoft Business Central or SharePoint function, so there would be no security updates or other development planned from our app.