No, end-to-end encryption does not prevent Facebook from accessing WhatsApp chats

At a glance

• During his Congressional hearing, Mark Zuckerberg reiterated that Facebook doesn’t have access to WhatsApp chats thanks to end-to-end encryption.
• In fact, communication channels between the WhatsApp and Facebook iOS apps could be abused to leak data from the entire chat history.
• The object of this article is not to claim that Facebook snoops on WhatsApp chats, but that end-to-end encryption is used by both WhatsApp and Facebook as a disingenuous and misleading argument to reassure the public.

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