This is not the first time Musk has publicly criticized Facebook for privacy issues. In 2018, he not only deleted his own Facebook page, but also that of his companies Tesla and SpaceX. His position in the long battle between Signal and WhatsApp, however, is not out of the question.
Both encrypted messaging applications have been found to have security errors over the years resolved. For years, the WhatsApp collected user data and shared it for use on its parent company Facebook. Its latest policy change simply extends this condition. Signal, on the other hand, has made historic battles with any entity that asks for them data and adds features to anonymize you where possible.
What is Signal and how does it work?
Signal is a standard application that you install with a single click and can be found at Google Play Store and Apple App Store. It works just like a regular messaging app. The main function of Signal is that it can send text, video, audio and video messages that are protected from end-to-end encryption (end-to-end encryption), after verifying him phone number and allows you to verify the identity of other Signal users. You can also use it to perform voice and video calls with an individual or a group.
Source of information: cnet.com