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ItsBob04/03/20252 repliesview on HN

> Even though they can't read your messages

I've long wondered if this is actually true.

If I have a closed-source app and claim (and can verify!) E2EE, surely I could still read every message from my closed-source app, within the app itself, and you'd never know.

I've never been a mobile app developer but I've been a desktop and web developer since the 90s so I don't know what apps can and cannot see but in a desktop app or web app, if it's on the screen, it's decrypted and I can put code in to read/steal it.

Am I missing something here?


Replies

floralhangnail04/03/2025

At about 2:33:15 here, Zuckerberg somewhat alludes that Meta can take screenshots of WhatsApp messages.

https://youtu.be/7k1ehaE0bdU?t=9189

show 2 replies
robertlagrant04/03/2025

It's true in a sense - using an iPhone or an Android phone Apple/Google could be streaming your screen contents constantly, so even e2ee wouldn't help.

I just don't know if that is actually true, or if meta doing e2ee and then pinging your messages around from the app after they're delivered is true. I've no reason to believe either is.