The mention that is varies by provider is notable. Apple encrypts End-to-end all iMessage chats, as well as FaceTime (VoIP) calls. None of the other providers on that list do that, so at least there's that.

Also, people here act like Apple jumped willingly onboard the PRISM program. You can bet your ass their arm was twisted by the government or they were taken into the program unknowingly (datacenter ISP taps, etc).

"Apple encrypts End-to-end all iMessage chats, as well as FaceTime (VoIP) calls."

End-to-end encryption does not guarantee that Apple keeps your data encrypted, or that they don't process it for 3rd parties (NSA would fit as a 3rd party, where Apple would be for them a content provider, as the slide shows).

"You can bet your ass their arm was twisted by the government or they were taken into the program unknowingly (datacenter ISP taps, etc)."

Can you back that up ? How can you be so sure ?

> End-to-end encryption does not guarantee that Apple keeps your data encrypted

I'm probably misunderstanding something here but doesn't "end-to-end encryption" mean that A encrypts it with B's key and [whoever is in the middle passing it along] can't decrypt it because they don't have B's key?

Yup, so Apple knows about your data.

And according to that slide they are a "provider" for NSA.

End-to-end encryption at least maybe guarantees that it is not your ISP that is selling you out to NSA (making it harder for Apple to explain why they are on that list).

How does Apple know about your data unless they have B's key?

Who generates the keys for B ?

You are not misunderstanding, you are correct.