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Signal – an ethical replacement for WhatsApp
(greenstarsproject.org)
This is a most excellent place for technology news and articles.
No. WhatsApp came first, but later adopted Signal's key exchange and encryption. WhatsApp was an independent company for years and had rejected several acquisition offers, but $19 billion is a big number.
One of WhatsApp's founders is now chairman of the Signal Foundation and a major financial backer of the project.
Thanks!