The Curious Engineer

All blogs / Security

Signal Blog

signal.org/blog

Say "hello" to a different messaging experience. An unexpected focus on privacy, combined with all of the features you expect.

SecurityMobile / iOS / AndroidNetworking

’15’20’25
Posts
154 from 21 Jan 2013 to 28 Sep 2026
Posting
monthly (6 in the last year)
Kind
company blog
Feed
https://signal.org/blog/rss.xml

2026 5

  1. Back to Backups: A Year in Review
  2. Introducing Automatic Key Verification
  3. More linked devices are on the table (and the Android tablet)
  4. Label yourself
  5. Put a pin in it

2025 5

  1. Signal Polls: Yes, no, maybe (yes!)
  2. Signal Protocol and Post-Quantum Ratchets
  3. Introducing Signal Secure Backups
  4. By Default, Signal Doesn't Recall
  5. A Synchronized Start for Linked Devices

2024 3

  1. Improving Private Signal Calls: Call Links & More
  2. Proxy Please: Help People Connect to Signal
  3. Keep your phone number private with Signal usernames

2023 6

  1. Trend report: Use Signal
  2. Privacy is Priceless, but Signal is Expensive
  3. New Features Roll Call: Fall 2023
  4. Quantum Resistance and the Signal Protocol
  5. Standing firm against threats to private and safe communication
  6. Signal is for everyone, and everyone is different

2022 8

  1. Story Time
  2. Removing SMS support from Signal Android (soon)
  3. Help people in Iran reconnect to Signal – a request to our community
  4. A Message from Signal's New President
  5. Technology Deep Dive: Building a Faster ORAM Layer for Enclaves
  6. Signal Your Support
  7. You Can Change Your Number
  8. New year, new CEO

2021 8

  1. How to build large-scale end-to-end encrypted group video calls
  2. Become a Signal Sustainer
  3. Improving first impressions on Signal
  4. Embrace ephemerality with default disappearing messages
  5. Exploiting vulnerabilities in Cellebrite UFED and Physical Analyzer from an app's perspective
  6. Update on beta testing payments in Signal
  7. Help us test payments in Signal
  8. Help users in Iran reconnect to Signal

2020 23

  1. No, Cellebrite cannot 'break Signal encryption.'
  2. Adding Encrypted Group Calls to Signal
  3. Link Up with Group Links
  4. Research on your terms
  5. Multi-device calls with ICE forking
  6. New Features Coming to Signal Groups
  7. A new platform is calling: Help us test one-to-one voice and video conversations on Signal Desktop
  8. Accept the unexpected: Message requests are now available in Signal
  9. Certifiably "F"ine
  10. Help us encrypt even more faces
  11. It's OK to be a little Emojional
  12. Your next upgrade deserves an upgrade
  13. Encrypt your face
  14. Looking back at how Signal works, as the world moves forward
  15. Blur tools for Signal
  16. Introducing Signal PINs
  17. 230, or not 230? That is the EARN IT question.
  18. Take a shortcut through keyboard history
  19. Signal Artist Series: Two new sticker packs from Swoon
  20. Give reactions a thumbs up
  21. Improving Registration Lock with Secure Value Recovery
  22. Storage management for Signal Android
  23. Sometimes once is better than a lifetime

2019 5

  1. Technology Preview for secure value recovery
  2. Make privacy stick
  3. Technology Preview: Signal Private Group System
  4. Signal for iPad, and other iOS improvements
  5. I link therefore I am

2018 5

  1. Setback in the outback
  2. Technology preview: Sealed sender for Signal
  3. A letter from Amazon
  4. Signal Foundation
  5. Signal partners with Microsoft to bring end-to-end encryption to Skype

2017 9

  1. Expanding Signal GIF search
  2. Standalone Signal Desktop
  3. Read receipts are coming to Signal
  4. Technology preview: Private contact discovery for Signal
  5. Encrypted profiles for Signal now in public beta
  6. Safety number updates
  7. Video calls for Signal out of beta
  8. Video calls for Signal now in public beta
  9. There is no WhatsApp 'backdoor'

2016 14

  1. Doodles, stickers, and censorship circumvention for Signal Android
  2. Safety number updates
  3. Signal and GIPHY
  4. Disappearing messages for Signal
  5. Desktop support comes to Signal for iPhone
  6. Signal for Android Attachment Bug
  7. Facebook Messenger deploys Signal Protocol for end-to-end encryption
  8. License update
  9. Open Whisper Systems partners with Google on end-to-end encryption for Allo
  10. Reflections: The ecosystem is moving
  11. Signal Desktop beta now publicly available
  12. WhatsApp's Signal Protocol integration is now complete
  13. Reproducible Signal builds for Android
  14. Signal on the outside, Signal on the inside

2015 24

  1. Signal Desktop
  2. Just Signal
  3. No Risk No Reward
  4. Saying goodbye to encrypted SMS/MMS
  5. Signal 2.0: Private messaging comes to the iPhone
  6. Beyond the Grunts and Clicks: An Exploration into Doing Things the Hard Way
  7. Paddle Out
  8. Mutiny!
  9. Naked
  10. They Live
  11. Real World Kauai
  12. There's no you in srveillance
  13. Mahalo
  14. Aloha But Not
  15. For the Love of Humans and Technology
  16. The pool on the roof must have a leak
  17. Encryption, encryption everywhere
  18. A curve by any other name
  19. The View From here
  20. Surrendering to the Potential of Constraints
  21. Signal to Noise
  22. Third Day Of Code
  23. Star Quality
  24. If you see a bug in the code, it's probably dying

2014 15

  1. Winter Of Code Lineup 2014-2015
  2. Open Whisper Systems partners with WhatsApp to provide end-to-end encryption
  3. Winter Of Code
  4. Free, Worldwide, Encrypted Phone Calls for iPhone
  5. Flock, Private Contact and Calendar Cloud Sync.
  6. Private Group Messaging
  7. The New TextSecure: Privacy Beyond SMS
  8. Android Contacts, the Social Graph Collider
  9. Moments to keep
  10. The value of our confidences
  11. A Whisper
  12. Design of Crypto
  13. Better than cake
  14. Roosters and a mountain of design
  15. The Difficulty Of Private Contact Discovery

2013 24

  1. BitHub = Bitcoin + GitHub. An experiment in funding privacy OSS.
  2. WBoC Lineup
  3. TextSecure, Now With 10 Million More Users
  4. Advanced cryptographic ratcheting
  5. Winter Break Of Code
  6. Alpine Hackathon Reportback
  7. Open Whisper Systems Alpine Hackathon
  8. Forward Secrecy for Asynchronous Messages
  9. Simplifying OTR deniability.
  10. Open Whisper Systems is coming to iPhone!
  11. Interested in privacy-enhancing technology? How to get involved at Open Whisper Systems.
  12. SBoC Farewell
  13. Call Quality Metrics
  14. All The Things That Pull And Push
  15. Sure
  16. Streamlining TextSecure Settings
  17. Highly Unconventional Suggested First Aid
  18. Dirigibles, Chinese Junk Rigs, and Surfboards
  19. Merchandise
  20. SBoC Lineup
  21. Client-side call quality
  22. Creating a low-latency calling network
  23. Spring Break Of Code
  24. A New Home