When a third party app says they offer “end to end encryption,” what does that mean?

Question

When messaging/journaling/etc apps say this, what does it actually mean, and why does it give people reassurance that their private info is safe?

In: 111

Answer 1

It basically means that only the sender and the intended recipient can actually read the message. This is in contrast to the usual encryption that is only used to secure message from the senderreceiver tofrom the server.

It is important though that there are a lot of companies that don’t use Cryptographic terms correctly. Though at least for the large direct messengers (e. G. WhatsApp) they usually do use the term end to end encryption correctly.