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signal >> blog
junh3 on 04 May 2021
moxie0 on 21 Apr 2021
junh3 on 13 Apr 2021
jlund on 04 Feb 2021
moxie0 on 23 Dec 2020
randall-signal on 14 Dec 2020
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 of our critical and personal moments move online, we want to continue to provide you with new ways to share and connect privately.
randall-signal on 28 Oct 2020
greggcorp on 26 Oct 2020
peter-signal on 20 Oct 2020
jlund on 13 Aug 2020
jlund on 01 Jul 2020
junh3 on 23 Jun 2020
jlund on 12 Jun 2020
imperiopolis on 09 Jun 2020
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 help support everyone self-organizing for change in the streets, we’re also distributing face coverings free of charge.
moxie0 on 05 Jun 2020
One immediate thing seems clear: 2020 is a pretty good year to cover your face.
randall-signal on 19 May 2020
jlund on 08 Apr 2020
jimio on 27 Jan 2020
alan-signal on 13 Jan 2020
jlund on 06 Jan 2020
jlund on 19 Dec 2019
jimio on 09 Dec 2019
jlund on 27 Nov 2019
jlund on 29 Oct 2018
moxie0 on 01 May 2018
moxie0 on 21 Feb 2018
scottnonnenberg on 31 Oct 2017
moxie0 on 26 Sep 2017
jlund on 06 Sep 2017
moxie0 on 13 Mar 2017
moxie0 on 13 Jan 2017
moxie0 on 17 Nov 2016
moxie0 on 11 Oct 2016
moxie0 on 08 Jul 2016
Our Signal Protocol libraries are open source, licensed GPLv3. We like the GPL for the quality control that it provides. If someone publicly says that they’re using our software, we want to see if they’ve made any modifications, and whether they’re using it correctly. This helps to increase transparency and accountability in deployments of our software, which we feel are important for end-to-end encryption.
liliakai on 07 Apr 2016
Over the past year, we’ve been progressively rolling out Signal Protocol support for all WhatsApp communication across all WhatsApp clients. This includes chats, group chats, attachments, voice notes, and voice calls across Android, iPhone, Windows Phone, Nokia S40, Nokia S60, Blackberry, and BB10.
riyapenn on 18 Aug 2015
It’s 2015, and the end of the road for encrypted SMS/MMS in TextSecure.
The TextSecure story started back in 2009, at the dawn of the smartphone era. Back then, TextSecure focused on securing the transport that everyone coming from feature phones was familiar with: SMS. Today, many things have changed, and TextSecure now emphasizes the “TextSecure transport,” which uses data rather than SMS. While we remain committed to supporting plaintext SMS/MMS in addition to the encrypted TextSecure transport so that the app can function as a unified messenger, we are beginning the process of phasing out support for SMS/MMS as an encrypted transport in favor of the TextSecure data protocol.
A guest post by greggawatt on 31 Jan 2015
A guest post by lconnolly on 30 Jan 2015
rhodey on 29 Jan 2015
on 28 Jan 2015
The 1988 film They Live is one of the last great masterpieces to come out of the Hollywood left . In the film, a drifter named John Nada discovers a box of sunglasses that, when worn, allows the wearer to really see the world around him.
A guest post by kmonkeyjam on 26 Jan 2015
joyceyan on 24 Jan 2015
A guest post by jackflips on 23 Jan 2015
A guest post by uxyoko on 22 Jan 2015
rileyjshaw on 21 Jan 2015
A guest post by jessysaurusrex on 20 Jan 2015
liliakai on 19 Jan 2015
trevp on 18 Jan 2015
abolishme on 17 Jan 2015
corbett on 16 Jan 2015
TheBlueMatt on 15 Jan 2015
elchao96 on 14 Jan 2015
A guest post by turtlekiosk on 13 Jan 2015
Winter Of Code Lineup 2014-2015
rhodey on 21 Jul 2014
Spring Break of Code 2013 I cut open my foot and hand while surfing; both wounds easily warranted stitches. Winter Break of Code 2014 I banged the top of my foot surfing over some coral; the cuts were sealed within minutes. Spring Break of Code 2013 I struggled with the Android SDK, while Winter Break of Code 2014 I caught myself taking a few too many short-cuts. On day zero nothing is easy, but over time you improve, spilling a little less blood every time.
meskio on 12 Jan 2014
A guest post by corbett on 10 Jan 2014
At the Open Whisper Systems spring break of code in 2013, I started work on TextSecure iOS . People are chomping at the bit to use our software on iOS. After a hiatus from the project, I’ve been happy to return to it over the last few months, joining some other contributors, including Frederic Jacobs as co-lead, Alban Diquet , and Claudiu-Vlad Ursache submitting pull requests, even over the holidays, with important cryptographic storage and UI-polishing contributions, and Bitcoin donations coming in from around the world.
A guest post by mkhandekar on 09 Jan 2014
A guest post by liliakai on 08 Jan 2014
A guest post by mcginty on 07 Jan 2014
A guest post by meskio on 22 Oct 2013
A guest post by corbett on 27 Sep 2013
moxie0 on 22 Aug 2013
emblem on 30 Mar 2013
A guest post by abolishme on 29 Mar 2013
A guest post by corbett on 28 Mar 2013
A guest post by liliakai on 27 Mar 2013
A guest post by rhodey on 26 Mar 2013
A guest post by isislovecruft on 25 Mar 2013
emblem on 18 Feb 2013
Whisper Systems was a company focused on the development of mobile security software, which was acquired by Twitter in late 2011. Twitter very generously made some of the Whisper Systems software available under an Open Source license (GPLv3), which has since been under open development by the community. The software has seen a number of new releases based on that open development, and we’ve been calling the project for this continued work “Open Whisper Systems.” Welcome to the project’s new home.