Signal Blog

Last September, we introduced an optional new way to automatically keep your Signal data safely and securely backed up so that important messages and memories can be easily recovered if something unexpected happens to one of your devices.

Signal now offers a feature called “automatic key verification” which complements the existing safety number system.

The latest update for Signal Android introduces comprehensive support for linked devices.

We all take on different roles in relation to our friends, neighbors, family members, and colleagues.

Your most frequently asked questions, dinner reservations, and vacation itineraries are already top of mind.

Signal polling: An easier way to see what your group chat really thinks and feels.

We are excited to announce a significant advancement in the security of the Signal Protocol: the introduction of the Sparse Post Quantum Ratchet (SPQR).

In the past, if you broke or lost your phone, your Signal message history was gone.

Signal Desktop now includes support for a new “Screen security” setting that is designed to help prevent your own computer from capturing screenshots of your Signal chats on Windows.

With Signal on Desktop and iPad, you can link your primary Android or iOS account with another device, letting you check and respond to messages in both places or conduct video meetings and calls from the comfort of a bigger screen.

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.

Several countries have recently blocked Signal, leaving their residents without a trusted and safe place to communicate.

Signal’s mission and sole focus is private communication.

New long-sleeve shirts and tote bags fresh from the Signal test kitchen: We build Signal for people all over the world.

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.

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 model.

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.

Signal exists to provide people everywhere with a tool for real private communication.

The tech industry–its products, conceptual frameworks, linguistic conventions, and cultural norms–is largely centered in the US (and, increasingly, China.

If your favorite way to update your friends about life disappears in 24 hours, we’ve got some happy news for you.

For many years, the Signal app on Android has supported sending and receiving plaintext SMS and MMS messages in addition to Signal messages.

Signal is currently blocked in Iran.

On September 12 I’ll be stepping into the role of Signal’s President, a new position created in collaboration with Signal’s leadership.

Private doesn’t mean lonely.

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.

Millions of people worldwide rely on Signal every day for secure and private communication.

It’s a new year, and I’ve decided it’s a good time to replace myself as the CEO of Signal.

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.

Signal has no data to sell, no advertisers to sell it to, and no shareholders to benefit from such a sale.

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.

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 devices.

Companies like Facebook aren’t building technology for you, they’re building technology for your data.

Cellebrite makes software to automate physically extracting and indexing data from mobile devices.

As the world stands today, the future of transaction privacy does not look great.

The latest Signal betas are rolling out today.

Just over a week ago, we announced that Iranian censors had started blocking all Signal traffic in the country.

Yesterday, the BBC ran a story with the factually untrue headline, “Cellebrite claimed to have cracked chat app’s encryption.”

2020 has seen its fair number of challenges and changes.

We recently released a new version of Signal groups with group admins, @mentions, permissions, and more.

Signal has always benefitted from our engaged and supportive community, and wouldn’t be what it is without your input and feedback.

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 incoming calls to ring across multiple devices.

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.

Update: This feature is now available in production.

The number of people who join Signal every day is still growing at a record pace.

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 nothing wrong, but we understand the confusion.

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.

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.

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.

One immediate thing seems clear about 2020: it’s a good year to cover your face.

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.