Say "hello" to a different messaging experience. An unexpected focus on privacy, combined with all of the features you expect.
Visit signal.org → RSS feedOn Hacker News Sep 2017 – Oct 2025
Security & Privacy 31Society, Policy & Culture 14Networking & Internet 13Tools & Productivity 12Tech Industry & Business 6Career & Management 2
As the world stands today, the future of transaction privacy does not look great. The existing landscape is dominated by traditional credit companies, who over the past decade have been steadily pushing their networks for increased access to user data. They (and their data customers) are on a tra...
At Signal, we want to make privacy simple. From the beginning, we’ve designed Signal so that your information is in your hands rather than ours. Technologies like Signal Protocol secure your messages so that they are never visible by anyone but you and the intended recipients. Technologies like p...
The phenomenon of unsolicited and unwanted messaging dates back to the earliest communication platforms: from prehistoric cave graffiti and postal chain letters to popup ads and robocalls. To prevent spam, most online services rely on large-scale inspection of plaintext conversation content or de...
Like many others, we have been following the latest developments in Australia related to the “Assistance and Access” bill with a growing sense of frustration. The widespread adoption of strong cryptography and end-to-end encryption has given people around the world the ability to protect their pe...
On September 12 I’ll be stepping into the role of Signal’s President, a new position created in collaboration with Signal’s leadership. I am thrilled, and I can’t think of a more meaningful use of my time, or a greater honor. I’ve been a friend, admirer, and champion of Signal since it was RedPho...
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, I envy writers, musicians, and filmmakers. Unlike software, when they create something, it is...
When legally forced to provide information to government or law enforcement agencies, we'll disclose the transcripts of that communication here.
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, moving towards full end-to-end encryption for all of their users by default. Over the past year, we...
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 Signal APK being distributed through Google Play.
In the “first half of 2016” (the most specific we’re permitted to be), we received a subpoena from the Eastern District of Virginia. The subpoena required us to provide information about two Signal users for a federal grand jury investigation. We’ve designed the Signal service to minimize the dat...
Building a social network is not easy. Social networks have value proportional to their size, so participants aren’t motivated to join new social networks which aren’t already large. It’s a paradox where if people haven’t already joined, people aren’t motivated to join. The trouble is that whi...