Both Signal and WhatsApp are encrypted, but Signal takes extra steps to keep your chats private.

Last update: May 22, 2020
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Introduction
This article analyses the security and confidentiality features of the most commonly used communication services or applications.
Note: the comparison is made between WhatsApp (the most widespread 1.6 billion users), Telegram (the most secure and widespread 400 million users), Signal and Wire (the most secure and confidential) according to world statistics. A comparison in terms of functionality is available at this address.
Remark: for any communication…

Pavel Durov criticized WhatsApp in new blog post

Germany's data privacy chief has told federal bodies not to use WhatsApp, amid concerns that it feeds Facebook with data. Ulrich Kelber said it appeared that the government has failed to establish enough safe services.

The unmaintained blog

Matrix.org

Une app israélienne transformée en mouchard servait à observer la croissance du service de messagerie. Quand Facebook a déboursé 19 milliards de dollars (17,5 milliards d'euros) pour acheter WhatsApp en février 2014, beaucoup se sont demandés si Mark Zuckerberg n'avait pas perdu...

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Social media platforms based in the U.S. including Facebook and WhatsApp will be forced to share users’ encrypted messages with British police under a new treaty between the two countries, according to a person familiar with the matter.