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by the_arun 2071 days ago
My speculation - Facebook might mine the conversation data & sell that to third party/show targeted ads on Facebook.
1 comments

Whatsapp is end to end encrypted. Facebook is not able to see the contents of Whataspp messages.
Well, that's what they say, but being closed source it's reasonable to think there might be backdoors somewhere. Besides, WhatsApp is not p2p, but client server based. Nobody knows for sure if the NSA Prism program still exists, but it does, Facebook would probably be part of it.
end-to-end encrypted with encryption key managed by WhatsApp/FB. Users don't own the key.
I thought you generated the key pair on your device and never sent the private key, not even to WhatsApp? Isn't that the idea behind the Signal protocol, which WhatsApp uses?
That's the theory. The closed source nature means that the WhatsApp app could send the key back to WhatsApp. How would you know if it does or doesn't?
Analyze the traffic between your phone and the Internet?
Several encrypted packets went to WhatsApp servers. Did they contain your key?