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I knew a guy that used deep packet inspection in a service[1]. He told me that back in ~2016, when using WhatsApp, the text was encrypted but nothing else was. If you sent a picture, it was in clear text.

I don't know if this is still true, but because of this, I have serious doubts about anything security related coming out of FB.

[1] Being intentionally vague here as to not dox him.




WhatsApp was/is heavily scrutinized, and it's fairly easy to sniff your own network traffic. It's unlikely that "some guy" and no one else discovered that WhatsApp was not encrypting content.




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