About us

Our mission is to make private communication simple.

Open Whisper Systems is both a large community of Open Source contributors, as well as a small team of dedicated developers. Together, we're working to advance the state of the art for secure communication, while simultaneously making it easy for everyone to use.

Are you owned by Twitter? No.
Are you a commercial project? Nope.
Can you read my messages? No way.
Can I help? Yes!
Is there support? Yes!

Moxie Marlinspike

Moxie Marlinspike

Moxie Marlinspike works on the protocols, the Android clients, and the server software. He has been contributing to Open Whisper Systems since it was Whisper Systems, formerly ran the product security team at Twitter, started the first cloud-based password cracking service, and has published a number of attacks on secure protocols like SSL and MS-CHAPv2.

Jake McGinty

Jake McGinty

Jake works hard to keep the Android client bug-free and lookin good. His many titles include MMS expert, usability enthusiast, circuit lecturer, and mohawk afficionado. In his freetime he hacks hardware, spins diabolos, and rides motorcycles.

Lilia Kai

Lilia Kai

Lilia develops the browser extension and maintains the website. She comes to Whisper Systems from the EFF, where she built online advocacy tools for activists fighting for a better internet. In her spare time she practices yoyo tricks and DIY home automation. She also serves as chief of sticker operations.

Rhodey Orbits

Rhodey Orbits

Rhodey Orbits maintains the Flock Android client and server deployments while simultaneously limping along on development of Zones. They have a satellite in orbit and have been working in computer security for seven years. Rhodey dreams of one day reclaiming the @rhodey handle on Twitter.

Matt Corallo

Matt Corallo

Matt is co-developing the JavaScript-based browser client, focusing on the protocol and messaging backends. He daylights as a Bitcoin developer and co-moonlights as a secure hardware researcher.

Christine Corbett Moran

Christine Corbett Moran

Christine co-leads the iOS development team, with a focus on TextSecure functionality. She is an MIT graduate with 11 years of software engineering experience and has been developing mobile applications for social good for the past 6 years. She daylights as an astrophysicist, and hopes to go to Mars one day.

Frederic Jacobs

Frederic Jacobs

Frederic is co-leading the iOS development. He daylights at the Swiss Institute of Technology (EPFL) and plays around with cryptography, censorship resistance and blockchains.

Tyler Reinhard

Tyler Reinhard

Tyler oversees brand development and design, and works directly on Signal for iOS and the browser. If he's not complaining about the weather, he's usually advocating on behalf of our users. He is also the founder of Mask Magazine, a youth culture + style magazine.