this post was submitted on 27 Jan 2026
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WhatsApp client is closed source. Any claims around E2EE is pointless, since it's impossible to verify.
It's E2EE alright. Just, don't ask what "ends" we're talking about.
This is objectively false. Reverse engineering is a thing, as is packet inspection.
Outside of open-source. That shit is usually illegal
It isn't. Otherwise security research would never happen for proprietary software and services.
Now you just need Meta to allow you on their networks to inspect packets and reverse engineer their servers because as far as I know, WhatsApp messages are not P2P.
/edit I betcha $5 that the connection from client to server is TLS(https), good luck decrypting that to see what its payload is.
Reverse engineering is theoretically possible, but often very difficult in practice.
I'm not enough of an expert in cryptography to know for sure if packet inspection would allow you to tell if a ciphertext could be decrypted by a second "back door" key. My gut says it's not possible, but I'd be happy to be proven wrong.
Hell, as far as I know, E2EE would be indistinguishable from client to server encryption, where the server can read everything without the need for a secret "backdoor key". You can see that the channel is encrypted, but you can't know who has the other key.
TMBE
Trust me bro encryption