Use anything by Open Whisper Systems.Edward Snowden, Whistleblower and privacy advocate
Signal is the most scalable encryption tool we have. It is free and peer reviewed. I encourage people to use it everyday.Laura Poitras, Oscar winning filmmaker and journalist
I am regularly impressed with the thought and care put into both the security and the usability of this app. It's my first choice for an encrypted conversation.Bruce Schneier, internationally renowned security technologist
After reading the code, I literally discovered a line of drool running down my face. It’s really nice.Matt Green, Cryptographer, Johns Hopkins University
Moxie 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.
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.
Lilia develops the browser extension and maintains the website. She comes to Open 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.
Riya supports you, the user, and is also a cheerleader for your feature requests. She used to run automated strategies in the derivatives trading world, and currently moonlights as a Hatha & Vinyasa yoga teacher.
Open Whisper Systems is both a large community of volunteer Open Source contributors, as well as a small team of dedicated grant-funded developers. Together, we're working to advance the state of the art for secure communication, while simultaneously making it easy for everyone to use.