Post

We launched CoverDrop 🎉 providing sources with a secure and anonymous way to talk to journalists. Having started five years ago as a PhD research project, this now ships within the Guardian app to millions of users—all of which provide cover traffic. Paper, code, and more info: www.coverdrop.org

coverdrop.orgCoverDrop: Blowing the Whistle Through A News App

Daniel Hugenroth

@lambda.bsky.social

9 June 2025

The launch article by Katharine Viner provides a great overview on how CoverDrop works, our collaboration with The Guardian, and why this system is so important: www.theguardian.com/membership/2...

theguardian.comIn a dangerous era for journalism – a powerful new tool to help protect sourcesToday, the Guardian, in collaboration with the University of Cambridge, launches Secure Messaging, a world-first from a media organisation

Daniel Hugenroth

@lambda.bsky.social

The university team has prepared a lil’ announcement as well: www.cam.ac.uk/research/new...

cam.ac.ukWhistleblowing tech based on Cambridge research launched by the GuardianWhistleblowers can contact journalists more securely thanks to a new confidential and anonymous messaging technology co-developed by University of Cambridge

9/6/25, 1:02 pm0 reposts2 likes

Daniel Hugenroth

@lambda.bsky.social

9 June 2025

Our CoverDrop white paper has a lot more technical details and we are immensely grateful to everyone who have provided us with valuable feedback throughout this project: www.cl.cam.ac.uk/techreports/...

cl.cam.ac.ukcl.cam.ac.uk

Daniel Hugenroth

@lambda.bsky.social

9 June 2025

There’s a lot more to say, and I’ll highlight some aspects that I’m particularly excited about over the next few weeks.