CoverDrop: a secure messaging system for newsreader apps CoverDrop is a system designed to allow users of news organisations' mobile apps to contact journalists confidentially and without leaving evidence that they are doing so. Overview The CoverDrop system consists of four major components: A module within the news organisation's regular mobile apps A cloud-based API The CoverNode: a set of services run from a secured location A desktop application used by journalists at the news organisation ...