- Mark Zuckerberg used Signal. After his phone number was leaked in 2019, it was revealed that it was registered with WhatsApp's rival app;
- Unlike WhatsApp, Signal stores conversations locally on our device and does not share them with partners. This is why it is considered a much safer option;
- WhatsApp has lost quite a few users in recent times. First, most didn't like the app's declarations of integration with Facebook, then it was attacked by malware.
Signal was created by a non-profit organization and, like WhatsApp, relies on an end-to-end encryption, an arrangement that offers greater degree of protection for sensitive personal or company data. In contrast to WhatsApp, however, Signal doesn't collect, store or share contacts with partners. And it was out of concern for his data that Zuckerberg, who doesn't particularly like to share his private life, may have used a rival messenger.
WhatsApp lost in the eyes of many users after the announcement that it would be more strongly integrated with Facebook. And then it only got worse. When malware impersonating the Huawei Mobile app spread among the users in just a few days, contributing to thousands of them losing data, many decided to abandon the app, which benefited Signal. The fact that Zuckerberg himself used Signal instead of WhatsApp certainly doesn't have a positive impact on the image of the other latter.
"With the May 15th WhatsApp Terms of Service acceptance deadline fast approaching, Mark leads by example."
This means opponents of the changes imposed by WhatsApp are left with deleting their account, downloading the report, exporting their chat history and switching to another messenger with full encryption, just like Mark did.