Published file metadata, source observations, indicators, and research history in one bounded catalog.
Sources represented on this page. Publication and observation dates describe the content; successful batch dates describe local collection. A recent batch does not certify complete coverage or current provider availability.
1 sources: 0 stale, 0 needing attention, 0 paused, 1 unverified.
Stale means older than twice the recorded collection interval, with a minimum of one hour; without an interval, the threshold is 24 hours. Cached content remains available while a feed is stale, paused, or unverified.
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. Read more...
First reported Feb 11, 2020 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordUpdate: This feature is now available in production. 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 screen; hear their laughter through the big speakers on your desk; and help us test the next generation of calling on Signal. Beta users get an early
First reported Aug 13, 2020 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordRight 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 the people who have gone into the streets to make their voices heard. We believe that something in America needs to change, and even if we don’t know exactly how, we support and trust in the people w
First reported Jun 03, 2020 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordAs of our latest Android release, Signal builds are reproducible. Reproducible builds help to verify that the source code in our GitHub repository is the exact source code used to build the compiled Signal APK being distributed through Google Play. Read more...
First reported Mar 31, 2016 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordA few months ago we completed the process of unifying all of our apps across Android, iOS, and the Desktop under the name ‘Signal.’ This simplified the language around our apps and eliminated a lot of confusion. Now we’re doing the same thing “inside” our apps by renaming Axolotl to Signal Protocol. Axolotl has been the name of the cryptographic protocol that our apps use for end-to-end encryption
First reported Mar 30, 2016 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordYesterday, 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 Cellebrite never even claimed to be able to. Since we weren’t actually given the opportunity to comment in that story, we’re posting this to help to clarify things for anyone who may have seen the head
First reported Dec 23, 2020 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordThe latest Signal release for Android includes support for GIF search and browsing. Signal has long supported sending and receiving GIFs, but this is an experiment that allows users to browse, search, and select popular GIFs from within Signal. Read more...
First reported Nov 01, 2016 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordFor the past few months, the Signal Desktop beta has been available through an invitation program. We’ve gotten a lot of feedback, made a lot of improvements, and are now ready to open the beta up for public access. Read more...
First reported Apr 07, 2016 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordThe 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 is based). This is not because the US has better programmers or more visionary entrepreneurs, but due primarily to historical material conditions. For example, early investments in networked computa
First reported Mar 07, 2023 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordAs 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. One side effect of this shift from analog to digital is the conjoined shift from the ephemeral to the eternal: words once transiently spoken are now – more often than not – data stored forever. We
First reported Aug 10, 2021 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordWe all take on different roles in relation to our friends, neighbors, family members, and colleagues. Keep those different roles clear in your many Signal group chats by using group member labels, now available in the latest versions of Signal for Android, Desktop, and iOS. Read more...
First reported Mar 19, 2026 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordWe recently released encrypted video calling as an opt-in beta. We’ve spent the past month collecting feedback and addressing the issues that the Signal community found in order to get it ready for production. Today’s Signal release for Android and iOS enables support for end-to-end encrypted video calls by default, which also greatly enhances the quality of Signal voice calls as well. We think it
First reported Mar 13, 2017 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence record2020 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. Today, we’re launching group calls in Signal with the latest version
First reported Dec 14, 2020 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordThe 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 in 2013, the Signal Protocol was adopted not only by Signal but well beyond. Technical information on the Signal Protocol can be found in the specifications section of our docs site. Today we are ha
First reported Sep 19, 2023 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordPrivate 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 discovery” and it’s an essential part of any messaging app. Most other communications apps enable contact discovery by maintaining their own internal social graph or by uploading and storing your full a
First reported Aug 19, 2022 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordToday’s Signal release for Android and iOS includes beta support for video calls. This represents an entirely new calling infrastructure for Signal, and should increase voice call quality as well. We think it’s a big improvement, but we’re rolling it out in stages to collect feedback from people with different devices, networks, and regions in order to ensure there are no surprises when it’s enabl
First reported Feb 14, 2017 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordGroups are inherently social, and Signal is a social app. Whether you’re planning a surprise party, discussing last night’s book club meeting, exchanging photos with your family, or organizing something important, group messaging has always been a key feature of Signal. Signal provides private groups: the Signal service has no record of your group memberships, group titles, group avatars, or group
First reported Dec 09, 2019 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordAt Open Whisper Systems, we’ve been developing open source “consumer-facing” software for the past four years. We want to share some of the things we’ve learned while doing it. As a software developer, I envy writers, musicians, and filmmakers. Unlike software, when they create something, it is really done — forever. A recorded album can be just the same 20 years later, but software has to change.
First reported May 10, 2016 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordNew 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. Read more...
First reported Dec 13, 2023 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordSignal 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 support calls of that size while ensuring that all communication is end-to-end encrypted, so we built our own open source Signal Calling Service to do the job. This post will describe how it works in mo
First reported Dec 15, 2021 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordThe 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 spam, most online services rely on large-scale inspection of plaintext conversation content or detailed social-graph analysis to determine who is saying what to whom and whether or not that should be
First reported Nov 01, 2021 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordThe 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 support for Signal Payments – a new feature that enables you to send and receive privacy focused payments as easily as sending or receiving a message. This is a beta feature in a beta build, but for thos
First reported Apr 06, 2021 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordThe latest Signal beta for Android and iOS introduces support for Signal Profiles. Profiles allow you to add a picture and display name that will be shown alongside your existing phone number when communicating with other users. Conversations will feel more personal. Group threads will be less confusing. All of this is possible without sacrificing the privacy and security that you have come to exp
First reported Sep 06, 2017 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordToday’s beta release of Signal for Android and iOS includes support for read receipts. This is an optional new feature that gives you the ability to see and share when messages have been read. Something tells us that you might find this useful… Read more...
First reported Oct 03, 2017 00:00 UTCCatalog metadata updated Oct 08, 2026 03:50 UTCOpen evidence recordA filename, label, or report mention alone does not establish maliciousness. Observation dates describe cited sources; collection dates describe this local metadata catalog. No malware samples are stored, fetched, or executed by these pages.