Signal does not collect user data in any way, so it doesn't even know anything about your device and location. In 2016, researchers from University of Oxford in the UK, Queensland University of Technology in Australia, and Canada's McMaster University actually audited the protocol, establishing that it has 'no major flaws,' per the International Association for Cryptologic Research. The messages are encrypted with the Signal Protocol, which multiple cybersecurity researchers found to be very strong. Signal uses robust end-to-end encryption, which means that the messages you send and receive cannot be accessed by anoyone, not even Signal itself. Signal now has tens of millions of users, many of whom are journalists, whistleblowers, and political activists-in short, people whose personal safety depends on staying as safe and anonymous as possible. It hit the market in 2014, and its user base has grown considerably since then. Signal is a free and open-source app that was developed by the non-profit Signal Foundation and Signal Messenger LLC.

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