[nostromo]

That may be a good motivator, but it's not true. The content of the messages are not going to be "sucked up into Facebook." The content of Whatsapp messages aren't accessible by Facebook.

[nicoburns]

> The content of Whatsapp messages aren't accessible by Facebook.

You don't know that. Sure the messages are (claimed to be) e2e encrypted. But key exchange goes through Whatsapp (Facebook) servers. So they could give themselves access easily enough if they wanted to.

[jolmg]

> But key exchange goes through Whatsapp (Facebook) servers. So they could give themselves access easily enough if they wanted to.

The key exchange going through their servers isn't so much the problem; public-key cryptography solves this. The problem is that the clients are closed source.

[hutzlibu]

"The content of Whatsapp messages aren't accessible by Facebook."

How do we know for sure?

It is closed source. We have to rely on reverse engeneering or whistleblowers inside FB.

[fakedang]

All media content damn well is sucked by FB. Read the TOS.

[mbesto]

> That may be a good motivator, but it's not true.

Technically, maybe not, but do the semantics really matter here?

[baq]

so how does the client show you messages? does your phone's display decrypt your messages?

those messages are absolutely going to be sucked by facebook in some manner - either exactly like messenger (i.e. full mitm) or at least some keywords, object identification in photos/movies, etc.