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Developer documentation
Historical blog archive
- Introducing Automatic Key Verification
- Back to Backups: A Year in Review
- Introducing Signal Secure Backups
- Put a pin in it
- Label yourself
- Safety number updates
- More linked devices are on the table (and the Android tablet)
- Signal Polls: Yes, no, maybe (yes!)
- By Default, Signal Doesn't Recall
- A Synchronized Start for Linked Devices
- Signal Protocol and Post-Quantum Ratchets
- Trend report: Use Signal
- Keep your phone number private with Signal usernames
- Improving Private Signal Calls: Call Links & More
- Proxy Please: Help People Connect to Signal
- Signal is for everyone, and everyone is different
- Privacy is Priceless, but Signal is Expensive
- Technology preview: Sealed sender for Signal
- Quantum Resistance and the Signal Protocol
- Encrypted profiles for Signal now in public beta
- New Features Roll Call: Fall 2023
- Technology Deep Dive: Building a Faster ORAM Layer for Enclaves
- Technology Preview: Signal Private Group System
- Standing firm against threats to private and safe communication
- Story Time
- Help users in Iran reconnect to Signal
- Help people in Iran reconnect to Signal – a request to our community
- Removing SMS support from Signal Android (soon)
- A Message from Signal's New President
- You Can Change Your Number
- New year, new CEO
- How to build large-scale end-to-end encrypted group video calls
- Signal Your Support
- Adding Encrypted Group Calls to Signal
- Embrace ephemerality with default disappearing messages
- Become a Signal Sustainer
- Improving first impressions on Signal
- The Instagram ads Facebook won't show you
- No, Cellebrite cannot 'break Signal encryption.'
- Exploiting vulnerabilities in Cellebrite UFED and Physical Analyzer from an app's perspective
- Update on beta testing payments in Signal
- Looking back at how Signal works, as the world moves forward
- New Features Coming to Signal Groups
- Link Up with Group Links
- Help us test payments in Signal
- A new platform is calling: Help us test one-to-one voice and video conversations on Signal Desktop
- Research on your terms
- Blur tools for Signal
- Multi-device calls with ICE forking
- Help us encrypt even more faces
- Encrypt your face
- Certifiably "F"ine
- Accept the unexpected: Message requests are now available in Signal
- Introducing Signal PINs
- Your next upgrade deserves an upgrade
- Give reactions a thumbs up
- It's OK to be a little Emojional
- Make privacy stick
- Signal Artist Series: Two new sticker packs from Swoon
- 230, or not 230? That is the EARN IT question.
- Take a shortcut through keyboard history
- Sometimes once is better than a lifetime
- Improving Registration Lock with Secure Value Recovery
- Storage management for Signal Android
- Technology Preview for secure value recovery
- Signal for iPad, and other iOS improvements
- I link therefore I am
- Technology preview: Private contact discovery for Signal
- Expanding Signal GIF search
- Signal partners with Microsoft to bring end-to-end encryption to Skype
- A letter from Amazon
- Setback in the outback
- Signal Foundation
- Read receipts are coming to Signal
- Standalone Signal Desktop
- Signal and GIPHY
- The Difficulty Of Private Contact Discovery
- Video calls for Signal out of beta
- Safety number updates
- Video calls for Signal now in public beta
- There is no WhatsApp 'backdoor'
- Desktop support comes to Signal for iPhone
- Doodles, stickers, and censorship circumvention for Signal Android
- Disappearing messages for Signal
- Signal for Android Attachment Bug
- Facebook Messenger deploys Signal Protocol for end-to-end encryption
- License update
- Advanced cryptographic ratcheting
- WhatsApp's Signal Protocol integration is now complete
- Signal Desktop beta now publicly available
- Open Whisper Systems partners with Google on end-to-end encryption for Allo
- Signal Desktop
- Reflections: The ecosystem is moving
- Just Signal
- Signal on the outside, Signal on the inside
- Reproducible Signal builds for Android
- Forward Secrecy for Asynchronous Messages
- No Risk No Reward
- Private Group Messaging
- Simplifying OTR deniability.
- Signal 2.0: Private messaging comes to the iPhone
- Beyond the Grunts and Clicks: An Exploration into Doing Things the Hard Way
- Mutiny!
- Paddle Out
- Saying goodbye to encrypted SMS/MMS
- Naked
- They Live
- There's no you in srveillance
- Real World Kauai
- Mahalo
- For the Love of Humans and Technology
- Aloha But Not
- The pool on the roof must have a leak
- Encryption, encryption everywhere
- A curve by any other name
- The View From here
- Surrendering to the Potential of Constraints
- If you see a bug in the code, it's probably dying
- Signal to Noise
- Third Day Of Code
- Star Quality
- Free, Worldwide, Encrypted Phone Calls for iPhone
- Open Whisper Systems partners with WhatsApp to provide end-to-end encryption
- Winter Of Code Lineup 2014-2015
- Winter Of Code
- Flock, Private Contact and Calendar Cloud Sync.
- The New TextSecure: Privacy Beyond SMS
- Android Contacts, the Social Graph Collider
- Moments to keep
- Design of Crypto
- Better than cake
- A Whisper
- The value of our confidences
- Roosters and a mountain of design
- WBoC Lineup
- Winter Break Of Code
- BitHub = Bitcoin + GitHub. An experiment in funding privacy OSS.
- Open Whisper Systems is coming to iPhone!
- TextSecure, Now With 10 Million More Users
- Open Whisper Systems Alpine Hackathon
- Alpine Hackathon Reportback
- SBoC Farewell
- Call Quality Metrics
- All The Things That Pull And Push
- Interested in privacy-enhancing technology? How to get involved at Open Whisper Systems.
- Sure!
- Streamlining TextSecure Settings
- Highly Unconventional Suggested First Aid
- Dirigibles, Chinese Junk Rigs, and Surfboards
- Merchandise
- Spring Break Of Code
- Client-side call quality
- SBoC Lineup
- A New Home
- Creating a low-latency calling network