I added a bunch of extensions allowed, as such:
pdf doc docx xls xlsx csv txt text xml jpeg jpe gif png bmp zip
And added one as denied:
And I tried uploading a .jpg file and it let it go through.
Did I not enter these properly (then instructions need to be better) or did the plugin not work?
If I don't add extensions in the Allowed column, will they be Denied by default? Or are all typical WordPress upload file extensions permitted still unless explicitly Denied?
(reference: http://codex.wordpress.org/Uploading_Files#About_Uploading_Files_with_WordPress )