Open Whisper Systems: Signal Messaging App

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There are a number of factors that set Signal by Open Whisper Systems apart from any other encrypted messaging platform. The first being that it is open source.
https://github.com/signalapp/Signal-Android
Signal uses e-to-e encryption or end-to-end. Next, given that it is open source anyone can analyse the code for back-doors and the strength of the encryption.
The celebrity whistle blower Edward Snowden https://twitter.com/Snowden endorses Signal and so do many IT professionals who report on controversial subjects.
  • Even if the company is subpoenaed Signal retains nearly nothing on the user. 
https://www.theverge.com/2016/10/4/13161026/signal-subpoena-court-order-encryption-police-open-whisper

Signal is showing up in mainstream more all the time.
https://www.wired.com/story/signal-encrypted-messaging-features-mainstream/

Security can even be improved upon the default settings with a few tweaks of the app settings.
https://theintercept.com/2016/07/02/security-tips-every-signal-user-should-know/




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