Saying goodbye to encrypted SMS/MMS
It’s 2015, and the end of the road for encrypted SMS/MMS in TextSecure.The TextSecure story started back in 2009, at the dawn of the smartphone era. Back then, TextSecure focused on securing the...
View ArticleNo Risk No Reward
After immersing myself for years and years in the world of finance (specifically, options market making and algorithmic trading), there was no escaping this mantra of “no risk, no reward.” Most of the...
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Just Signal
Today we’ve started rolling out Signal for Android, which unites simple private messaging and simple private calling into a single app on Android. This is the culmination of our effort to combine...
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Signal Desktop
Today we’re making the Signal Desktop beta available. Signal Desktop brings the trusted private messaging experience of Signal to the desktop, with a simplicity that allows you to seamlessly continue...
View ArticleSignal on the outside, Signal on the inside
A few months ago we completed the process of unifying all of our apps across Android, iOS, and the Desktop under the name ‘Signal.’ This simplified the language around our apps and eliminated a lot of...
View ArticleReproducible Signal builds for Android
As of our latest Android release, Signal builds are reproducible. Reproducible builds help to verify that the source code in our GitHub repository is the exact source code used to build the compiled...
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WhatsApp's Signal Protocol integration is now complete
At Open Whisper Systems, our goal is to make private communication simple. A year ago, we announced a partnership with WhatsApp and committed to integrating the Signal Protocol into their product,...
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Signal Desktop beta now publicly available
For the past few months, the Signal Desktop beta has been available through an invitation program. We’ve gotten a lot of feedback, made a lot of improvements, and are now ready to open the beta up for...
View ArticleReflections: The ecosystem is moving
At Open Whisper Systems, we’ve been developing open source “consumer-facing” software for the past four years. We want to share some of the things we’ve learned while doing it.As a software developer,...
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Open Whisper Systems partners with Google on end-to-end encryption for Allo
At Open Whisper Systems, our goal is to make private communication simple. The foundation of our technology is Signal Protocol, a modern, open source, strong encryption protocol for asynchronous...
View ArticleLicense update
Signal Protocol is a modern, open source, strong encryption protocol for asynchronous messaging systems. We use Signal Protocol as the foundation for our own private messaging app, Signal, but also...
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Facebook Messenger deploys Signal Protocol for end-to-end encryption
Facebook Messenger has started rolling out Secret Conversations, a feature that enables end-to-end encryption for conversations within Messenger. Secret Conversations is built on Signal Protocol, a...
View ArticleSignal for Android Attachment Bug
We recently received a great bug report from Jean-Philippe Aumasson and Markus Vervier, who identified a problem with the way that image, audio, and video attachments are processed by the Signal for...
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Desktop support comes to Signal for iPhone
The latest Signal for iPhone release now includes multi-device support, allowing you to seamlessly move your private messaging experience from your iPhone to your desktop computer and back. Once you’ve...
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Disappearing messages for Signal
The latest Signal release for iPhone, Android, and Desktop now includes support for disappearing messages.The timer has comeWith this update, any conversation can be configured to delete sent and...
View ArticleSignal and GIPHY
The latest Signal release for Android includes support for GIF search and browsing. Signal has long supported sending and receiving GIFs, but this is an experiment that allows users to browse, search,...
View ArticleSafety number updates
The latest Signal release includes some changes to the way safety numbers work.Safety numbers allow Signal users to verify the privacy of their communication with a contact, either by comparing a...
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Doodles, stickers, and censorship circumvention for Signal Android
The latest Signal for Android release includes support for adding doodles, stickers, and text to images.This release also includes support for censorship circumvention in Egypt and the United Arab...
View ArticleThere is no WhatsApp 'backdoor'
Today, The Guardian published a story falsely claiming that WhatsApp’s end-to-end encryption contains a “backdoor.”
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Video calls for Signal now in public beta
Today’s Signal release for Android and iOS includes beta support for video calls.This represents an entirely new calling infrastructure for Signal, and should increase voice call quality as well. We...
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