Technology Preview for secure value recovery
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...
View ArticleSometimes once is better than a lifetime
Today’s beta releases of Signal for Android and iOS include a new way to send individual photos and videos that are automatically removed from a conversation thread after they have been viewed.
View ArticleStorage management for Signal Android
Signal for Android now includes storage management functionality that helps visualize files across all of your conversations, sorted by size and type, in order to assist you in reducing the amount of...
View ArticleImproving Registration Lock with Secure Value Recovery
Registration Lock allows you to set a PIN that is required for account registration in addition to standard SMS-based verification. Today’s Signal beta release enhances the security of these PINs by...
View ArticleGive reactions a thumbs up
When you’re standing next to a friend who says something funny, you can just laugh. You don’t need to pause and say “I found what you just said humorous” or quote their own words back to them before...
View ArticleSignal Artist Series: Two new sticker packs from Swoon
We announced support for stickers in Signal less than two months ago. Since then, over five thousand sticker packs have been uploaded. Today we are officially adding two more: Hands and Faces by Swoon.
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Take a shortcut through keyboard history
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View Article230, or not 230? That is the EARN IT question.
Over the past several weeks, Signal traffic has gone through the roof. New users are signing up at unprecedented rates, and we’ve expanded our server capacity faster than we ever anticipated.It means a...
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Introducing Signal PINs
At Signal, our goal is to build a reliable, secure, and private communication experience that is broadly accessible and simple to use. From the beginning, we’ve designed Signal so that your information...
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Blur tools for Signal
Right now, people around the world are marching and protesting against racism and police brutality, outraged by the most recent police murders of George Floyd and Breonna Taylor. At Signal, we support...
View ArticleLooking back at how Signal works, as the world moves forward
In the midst of world-wide protests against racism and police brutality, a lot of people are becoming more immediately aware and concerned about the security of their data and online communication....
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Encrypt your face
One immediate thing seems clear about 2020: it’s a good year to cover your face. Online, we’re working to scale and improve Signal for everyone that is relying on it, but as one small offline way to...
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Your next upgrade deserves an upgrade
Signal iOS now includes a new feature that makes it possible to switch to a brand-new iPhone or iPad while securely transferring Signal information from your existing iOS device. As with every new...
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It's OK to be a little Emojional
The world was a different place when we announced message reactions back in February, but expressing the way you feel has never been more important. Instead of being limited to the default set of...
View ArticleHelp us encrypt even more faces
It’s been about two weeks since we announced an initiative to distribute versatile face coverings to help support everyone who is self-organizing for change in the streets. Since then, we’ve shipped...
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Certifiably "F"ine
Sometimes people dive into Signal’s code looking for domain names, and then they send us screenshots asking if they should be concerned:We reply with a short explanation that lays out why there’s...
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Accept the unexpected: Message requests are now available in Signal
The number of people who join Signal every day is still growing at a record pace. With so many new conversations getting started, we’ve heard from a lot of users that they’d like more control over how...
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A new platform is calling: Help us test one-to-one voice and video...
The latest beta release of Signal Desktop includes preliminary support for one-to-one voice and video calls. Call your friends and family on macOS, Windows, and Linux; see their smiles on a larger...
View ArticleNew Features Coming to Signal Groups
Whether it’s staying in touch with family and friends, planning a party, scheduling an event, getting work done, or organizing for change, group chats are an increasingly important part of Signal....
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Multi-device calls with ICE forking
Now that voice and video calls are available for everyone on Signal Desktop and iPad, in addition to our mobile clients, we want to share a closer look at the technology that makes it possible for...
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Research on your terms
Signal has always benefitted from our engaged and supportive community, and wouldn’t be what it is without your input and feedback. As the number of people using Signal has grown, so have our efforts...
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Link Up with Group Links
We recently released a new version of Signal groups with group admins, @mentions, permissions, and more. Today we’re adding one more feature into the mix: group links, which let you quickly create a...
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Adding Encrypted Group Calls to Signal
2020 has seen its fair number of challenges and changes. We’ve all adapted to new ways of staying in touch, getting work done, celebrating birthdays and weddings, and even exercising. As more and more...
View ArticleNo, Cellebrite cannot 'break Signal encryption.'
Yesterday, the BBC ran a story with the factually untrue headline, “Cellebrite claimed to have cracked chat app’s encryption.” This is false. Not only can Cellebrite not break Signal encryption, but...
View ArticleHelp users in Iran reconnect to Signal
Just over a week ago, we announced that Iranian censors had started blocking all Signal traffic in the country. As an interim solution to help people in Iran get connected again, we’ve added support in...
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Help us test payments in Signal
The latest Signal betas are rolling out today. Inside, you’ll find performance enhancements, a slew of bug fixes, improvements to the mute settings, and if you’re in the United Kingdom, you’ll see...
View ArticleUpdate on beta testing payments in Signal
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...
View ArticleExploiting vulnerabilities in Cellebrite UFED and Physical Analyzer from an...
Cellebrite makes software to automate physically extracting and indexing data from mobile devices. They exist within the grey – where enterprise branding joins together with the larcenous to be called...
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The Instagram ads Facebook won't show you
Companies like Facebook aren’t building technology for you, they’re building technology for your data. They collect everything they can from FB, Instagram, and WhatsApp in order to sell visibility into...
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Embrace ephemerality with default disappearing messages
As the norms for how people connect have changed, much of the communication that once took place through the medium of coffee shops, bars, and parks now takes place through the medium of digital...
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Improving first impressions on Signal
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...
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Become a Signal Sustainer
Signal has no data to sell, no advertisers to sell it to, and no shareholders to benefit from such a sale. We’re building a different kind of tech – where your data stays in your hands – but we’re also...
View ArticleHow to build large-scale end-to-end encrypted group video calls
Signal released end-to-end encrypted group calls a year ago, and since then we’ve scaled from support for 5 participants all the way to 40. There is no off the shelf software that would allow us to...
View ArticleNew year, new CEO
It’s a new year, and I’ve decided it’s a good time to replace myself as the CEO of Signal.I have now been working on Signal for almost a decade. It has always been my goal for Signal to grow and...
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You Can Change Your Number
Millions of people worldwide rely on Signal every day for secure and private communication. Some of these people change their phone number, but want to continue using Signal without registering for a...
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Signal Your Support
People around the world count on Signal for things as simple as sharing moments of celebration like a graduation or as high stakes as coordinating a protest. We’ve got your back no matter what! As...
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Technology Deep Dive: Building a Faster ORAM Layer for Enclaves
Private doesn’t mean lonely. Signal’s mission is to help you connect with people in a secure way. This means that you need to know which of your contacts are also on Signal. This is called “contact...
View ArticleA Message from Signal's New President
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...
View ArticleHelp people in Iran reconnect to Signal – a request to our community
Signal is currently blocked in Iran. To help people in the country access Signal, we are republishing and revising a post that we originally posted in February, 2021 during a very similar situation in...
View ArticleRemoving SMS support from Signal Android (soon)
For many years, the Signal app on Android has supported sending and receiving plaintext SMS and MMS messages in addition to Signal messages. SMS and MMS are standardized communication protocols that...
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Story Time
If your favorite way to update your friends about life disappears in 24 hours, we’ve got some happy news for you.Stories are now available on Signal for Android and iOS, with Desktop coming soon!
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Signal is for everyone, and everyone is different
The tech industry–its products, conceptual frameworks, linguistic conventions, and cultural norms–is largely centered in the US (and, increasingly, China. But we’re focused here on the US, where Signal...
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Standing firm against threats to private and safe communication
Signal exists to provide people everywhere with a tool for real private communication. That’s our only goal, and we take it very seriously. We’re structured as a nonprofit to ensure that market forces...
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Quantum Resistance and the Signal Protocol
The Signal Protocol is a set of cryptographic specifications that provides end-to-end encryption for private communications exchanged daily by billions of people around the world. After its publication...
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New Features Roll Call: Fall 2023
You should be able to communicate without worrying that every gossip tidbit, meme, or joke you share and who you share it with will get churned up into fodder for targeted ads or used to train an AI...
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Privacy is Priceless, but Signal is Expensive
Signal is the world’s most widely used truly private messaging app, and our cryptographic technologies provide extra layers of privacy beyond the Signal app itself. Since launching in 2013, the Signal...
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Trend report: Use Signal
New long-sleeve shirts and tote bags fresh from the Signal test kitchen:We build Signal for people all over the world. So, of course we wanted to reflect that same global outlook in our merch.
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Keep your phone number private with Signal usernames
Signal’s mission and sole focus is private communication. For years, Signal has kept your messages private, your profile information (like your name and profile photo) private, your contacts private,...
View ArticleProxy Please: Help People Connect to Signal
Several countries have recently blocked Signal, leaving their residents without a trusted and safe place to communicate.To help in this situation, Signal provides a built-in censorship circumvention...
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Improving Private Signal Calls: Call Links & More
If you love group calls on Signal, but don’t want to create a group chat for every combination of your friends or colleagues, you’re in luck. Today we’re launching call links: Share a link with anyone...
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