They are immediately and irrevocably deleted from the server once they are delivered to the recipient. Signal messages, pictures, files and other contents are not stored on the cloud for long. In 2016, the service received a subpoena requiring information about two users for a federal grand jury investigation, to which they answered: “the only information we can produce in response to a request like this is the date and time a user registered with Signal and the last date of a user’s connectivity to the Signal service”. Signal servers keep almost no user metadata. When the WhatsApp controversy blew up in January, none other than the tech billionaire Elon Musk tweeted his support for Signal:īetween 12 and 14 January 2021, the number of Signal installations listed on Google Play increased from over 10 million to over 50 million. #notesforFBI (Spoiler: they already know) - Edward Snowden November 2, 2015 Signal’s website features endorsements from privacy experts like Edward Snowden:

Signal will warn you when messages are sent unencrypted. Note that SMS messages are relayed by your mobile carrier rather than the Internet and are not encrypted. Used this way, Signal has the ability to send unencrypted text messages to - and display unencrypted text messages from - non-Signal users. In addition to that, the Android version of Signal can also send and receive regular SMS/MMS messages and replace your system built-in SMS app. A key difference is that privacy isn’t optional when using Signal - every message, every call between Signal users is end-to-end encrypted. It offers a similar set of features to its competitors WhatsApp and Telegram: Signal allows you to send text and voice messages, as well as photos, videos and files, in one-to-one or group chats, in addition to make voice and video calls.

Signal is a simple yet powerful and secure instant messenger.

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