Whatsapp is not? Are you sure? I would assume NSA doing all it wants as well.
Whatsapp is out not because it can't let authorities audit it, but because of other economic reasons.
Well, it's E2E encrypted, that's for sure. The NSA, like the Mossad, can do pretty much anything if you're a high-value target, I'd assume, but personally, I don't think there is blanket mass surveillance of WhatsApp chats, no.
> Whatsapp is out not because it can't let authorities audit it, but because of other economic reasons.
Do you have any evidence or even arguments for that assertion?
It's not driven by economics.