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I think this is the most important to me. On Android, this is only the second app that is likely to have a large userbase and e2e encryption for chats. The fact

by ac29 10y ago

I think this is the most important to me. On Android, this is only the second app that is likely to have a large userbase and e2e encryption for chats. The fact that its opt-in is a non issue to me. Didn't know WhatsApp had default e2e encryption. Might install it and check it out. I imagine it sends some sort of personal information back to the facebook mothership, though.

nothrabannosir 10y ago
WhatsApp doesn't just have e2e encryption by default; they actually hired (or just contracted?) Moxie to implement the signal protocol: Over the past year, we've been progressively rolling out Signal Protocol support for all WhatsApp communication across all WhatsApp clients. This includes chats, group chats, attachments, voice notes, and voice calls across Android, iPhone, Windows Phone, Nokia S40, Nokia S60, Blackberry, and BB10. As of today [2016/4/5], the integration is fully complete. - https://whispersystems.org/blog/whatsapp-complete/ https://whispersystems.org/blog/whatsapp-complete/
- nileshtrivedi 10y ago
  So did Google for Allo.
- DavideNL 10y ago
  e2e encryption, meaning all data is "safe while transferred". The client (Whatsapp) can obviously read the data on both sides - and perhaps sent it to Whatsapp servers with e2e as well, so the data is transferred safely to Whatsapp/Facebook, without other eavesdroppers being able to see it :-) My point is, if you don't trust the company that created it, it doesn't matter what technology is uses. So who trusts Whatsapp/Facebook with their private data...?
flyt 10y ago
It doesn't send any personal data back to WhatsApp/Facebook, all it needs to work is a phone number.
- gandarojin 10y ago
  Except… WhatsApp definitely gets a copy of your address book: https://www.whatsapp.com/faq/en/general/20971813 https://www.whatsapp.com/faq/en/general/20971813 “During this entire process, only phone numbers are sent to WhatsApp for lookup, securely, over an encrypted connection.”
  - nileshtrivedi 10y ago
    Whatsapp also gets the metadata about the message: sender, receiver, time and probably location.

by ac29 10y ago

nothrabannosir 10y ago

WhatsApp doesn't just have e2e encryption by default; they actually hired (or just contracted?) Moxie to implement the signal protocol: Over the past year, we've been progressively rolling out Signal Protocol support for all WhatsApp communication across all WhatsApp clients. This includes chats, group chats, attachments, voice notes, and voice calls across Android, iPhone, Windows Phone, Nokia S40, Nokia S60, Blackberry, and BB10. As of today [2016/4/5], the integration is fully complete. - https://whispersystems.org/blog/whatsapp-complete/ https://whispersystems.org/blog/whatsapp-complete/

nileshtrivedi 10y ago
So did Google for Allo.
DavideNL 10y ago
e2e encryption, meaning all data is "safe while transferred". The client (Whatsapp) can obviously read the data on both sides - and perhaps sent it to Whatsapp servers with e2e as well, so the data is transferred safely to Whatsapp/Facebook, without other eavesdroppers being able to see it :-) My point is, if you don't trust the company that created it, it doesn't matter what technology is uses. So who trusts Whatsapp/Facebook with their private data...?

flyt 10y ago

It doesn't send any personal data back to WhatsApp/Facebook, all it needs to work is a phone number.

gandarojin 10y ago
Except… WhatsApp definitely gets a copy of your address book: https://www.whatsapp.com/faq/en/general/20971813 https://www.whatsapp.com/faq/en/general/20971813 “During this entire process, only phone numbers are sent to WhatsApp for lookup, securely, over an encrypted connection.”
- nileshtrivedi 10y ago
  Whatsapp also gets the metadata about the message: sender, receiver, time and probably location.