Replying regarding the issue of accidentally sharing sensitive files from Downloads folder, for example sensitive .pdf, .docx downloaded via web browser may be reduced like this:
1) changing description in Options / My Files / Configure (unsafe file sharing) by mentioning something like: Make sure that your Downloads folder is not common for other apps to store sensitive files like documents.
2) disabling documents sharing for downloads folder permanently internally in app

3) set default downloads folder to ~/Downloads/WireShare/ because i think for Linux user it is more convenient location he may not want to change as much as current ~/WireShare/Saved/