These tables include sources about famous people or respectable institutions that are using the Signal app or its underlying encryption technology, the Signal Protocol.
| Date | Person | Known for | Quote | Source |
|---|---|---|---|---|
| 2021-12-07 | Sanna Marin | Finnish Prime Minister | “Prime Minister Sanna Marin (S&D) told the media today that she wants to keep her official phone as clean as possible. The only extra application installed on her mobile phone is Signal.” | Ilta-Sanomat (Finnish) and English translation |
| 2021-04-04 | Mark Zuckerberg | Co-founder and CEO of Facebook | Dave Walker from Synack | |
| 2021-01-26 | Elizabeth Denham | UK Information Commissioner | “Which service do you use for end-to-end encryption messaging?” “Signal, for my personal communications.” | CommonsDCMS hearing |
| 2021-01-15 | John Cusack | American actor, producer, screenwriter, and political activist | “I only use signal for secure texts” | tweet |
| 2021-01-07 | Elon Musk | World’s richest man, SpaceX, Tesla | “Use Signal.” | tweet |
| 2020-12-01 | Joe Rogan | American comedian, podcast host, and mixed martial arts color commentator | “I support [Signal] and I try to tell other people to use it as well.” | Podcast on Spotify |
| 2020-06-03 | Jack Dorsey | American technology entrepreneur and philanthropist who is the co-founder and CEO of Twitter | “Download @signalapp: https://signal.org” | tweet |
| 2017-09-29 | Bruce Schneier | Internationally recognized security profesional | “I am regularly impressed with the thought and care put into both the security and the usability of this app. It’s my first choice for an encrypted conversation.” | blog |
| 2016-09-15 | Joseph Gordon-Levitt | American actor, filmmaker, singer, and entrepreneur | “Since the Snowden leaks have you made any changes in your usage of technology?” “Well, for one thing, I downloaded Signal. Great easy-to-use app for encrypted phone calls and text messages.” | Reddit AMA |
| 2015-11-02 | Edward Snowden | American whistleblower who copied and leaked highly classified information from the National Security Agency in 2013 when he was a Central Intelligence Agency employee and subcontractor | “I use Signal every day.” | tweet |
| 2015-03-25 | Malcolm Turnbull | At the time, Austalia’s Minister for Communications. Later became the 29th Prime Minister of Australia from 2015 to 2018. | “Turnbull recently downloaded an encryption app called Signal.” | The Guardian |
| Date | Organization | Description | Quote | Source |
|---|---|---|---|---|
| 2020-02-24 | European Commission | The executive branch of the European Union, responsible for proposing legislation, implementing decisions, upholding the EU treaties and managing the day-to-day business of the EU | “The European Commission has told its staff to switch to the encrypted Signal messaging app.” | The Verge |
| 2020-01-27 | Reuters | One of the largest international news organizations in the world | “Reuters will no longer be fielding tips through WhatsApp. Instead, we recommend using Signal.” | Submit confidential news tips to Reuters |
| 2019-12-17 | Conservative Party (UK) | A centre-right political party in the United Kingdom. Have been in government since 2010 and as of 2019, hold an overall majority in the House of Commons with 365 Members of Parliament. | “The Conservative party has started using the secure messaging service Signal for its internal communications with Tory MPs” | The Guardian |
| 2017-05-17 | United States Senate | The upper chamber of the United States Congress, which, along with the United States House of Representatives—the lower chamber—constitutes the legislature of the United States | “The Senate Sergeant at Arms recently told Senate staffers that Signal, widely considered by security researchers and experts to be the most secure encrypted messaging app, has been approved for use.” | ZDNet, Ron Wyden letter |
| Date | Business | Description | Quote | Source |
|---|---|---|---|---|
| 2021-01-18 | Play Guitar Burnley | Acoustic and electric guitar lessons and more | “One main priority Signal has above every single other app mentioned, is your right to privacy and maintaining a Privacy First Approach. We personally are willing to compromise on the reach of the app because we feel your privacy and security is far more important.” | Play Guitar Burnley blog |
| Date | Movement | Description | Quote | Source |
|---|---|---|---|---|
| 2021-01-12 | WhatsApp protesters | WhatsApp announced that they will be updating their terms and privacy policy. Users will have to agree by May 15th, 2021, or be blocked from using the service. | “the user base of Signal has “exploded” in recent weeks […] the app currently ranks at the top on App Store in 40 countries and on Google Play Store in 18 countries” | TechCrunch on Jan 12, TechCrunch on Jan 15 |
| 2020-07-08 | Hong Kong residents and protesters | “the Chinese government in Beijing passed a new national security law that reduced Hong Kong’s autonomy and could undermine its traditionally strong protections for civil liberties.” | “Signal has become the most downloaded app in Hong Kong on both Apple’s and Google’s app stores” | Ars Technica |
| 2020-06-03 | George Floyd protesters | The civil unrest and protests began as part of international responses to the killing of George Floyd, a 46-year-old African-American man, during an arrest in Minneapolis, Minnesota | “Since May 25, […] Signal has been downloaded 121,000 times in the US. […] Signal became one of the top 10 most downloaded social apps on iOS yesterday for the first time” | Vox |
| Date | Product | Number of users/installs | Quote | Source |
|---|---|---|---|---|
| 2020-11-19 | Google Messages | More than a billion installs | “Starting with one-to-one conversations, all RCS chat messages will be E2EE if both clients have thelatest version of Messages. […] Messages uses the Signal Protocol to build E2EE for RCS messages” | blog post, technical paper |
| 2018-01-11 | Microsoft Skype (Private Conversations) | Hundreds of millions of active users | “We’re excited that Private Conversations in Skype will allow more users to take advantage of Signal Protocol’s strong encryption properties for secure communication.” | blog post |
| 2016-07-08 | Facebook Messenger (Secret Conversations) | Over 1 billion monthly active users | “Facebook Messenger has started rolling out Secret Conversations, a feature that enables end-to-end encryption for conversations within Messenger. Secret Conversations is built on Signal Protocol” | blog post |
| 2016-05-18 | Google Allo (Incognito Mode) | At the time, a brand new app | “We’ve been collaborating together on the integration of Signal Protocol into Allo, which will bring all of Signal Protocol’s strong encryption properties to Allo’s incognito mode.” | blog post |
| 2016-04-05 | 2 billion users | “WhatsApp’s Signal Protocol integration is now complete” | blog post |
| Date | Film/Series/Book/Other | Episode/Chapter |
|---|---|---|
| 2019-07-31 | Euphoria (American TV series) | S01E05 |
| 2017-05-30 | House of Cards (American TV series) | S05E02 |
| 2016-08-10 | Mr. Robot (TV series) | S02E06, S04E04 |