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WhatsApp need it because of the P2P technology. On Telegram, your messages are stored on their servers, so it's less secure, but you can text on multiple device

WhatsApp need it because of the P2P technology. On Telegram, your messages are stored on their servers, so it's less secure, but you can text on multiple devices. I agree that we need business tools. The demand for customer service via WhatsApp where I work is much higher than the ability to a single operator answer them.

fishywang 9y ago
It's possible to store messages on the servers and be secure at the same time (I'm not saying Telegram in particular is secure). I think it's more because Whatsapp's model is much cheaper on server expenses (they only need to store messages on the server until it's delivered).
- rodorgas 9y ago
  It can be secure, but it's less secure by definition. While it's almost impossible to crack some cryptos, it's definitely impossible retrieve data that simply isn't there.
  - fishywang 9y ago
    What I'm saying is I don't think Whatsapp designed it to be secure (P2P is more likely a byproduct of their design). They designed it to save server cost. After they are successful, it's straightforward to implement P2P crypto on that design, so they added that feature because they don't store the messages on server anyway.
  - newscracker 9y ago
    WhatsApp is not strictly P2P and your belief that it doesn't store information on its servers, by claiming "it's definitely impossible retrieve data that simply isn't there", isn't true. It does store encrypted messages on its servers for up to 30 days while it attempts to deliver it. [1] [1]: https://www.whatsapp.com/legal/#privacy-policy-information-we-collect https://www.whatsapp.com/legal/#privacy-policy-information-w...
newscracker 9y ago
To the point, WhatsApp is designed that way. Wire [1], which also has end-to-end encryption of all chats, supports syncing across multiple devices and doesn't have this requirement of a master device. Wire also stores encrypted chats on the server for a limited time, just like WhatsApp does. [1]: https://wire.com https://wire.com

fishywang 9y ago

It's possible to store messages on the servers and be secure at the same time (I'm not saying Telegram in particular is secure). I think it's more because Whatsapp's model is much cheaper on server expenses (they only need to store messages on the server until it's delivered).

rodorgas 9y ago
It can be secure, but it's less secure by definition. While it's almost impossible to crack some cryptos, it's definitely impossible retrieve data that simply isn't there.
- fishywang 9y ago
  What I'm saying is I don't think Whatsapp designed it to be secure (P2P is more likely a byproduct of their design). They designed it to save server cost. After they are successful, it's straightforward to implement P2P crypto on that design, so they added that feature because they don't store the messages on server anyway.
- newscracker 9y ago
  WhatsApp is not strictly P2P and your belief that it doesn't store information on its servers, by claiming "it's definitely impossible retrieve data that simply isn't there", isn't true. It does store encrypted messages on its servers for up to 30 days while it attempts to deliver it. [1] [1]: https://www.whatsapp.com/legal/#privacy-policy-information-we-collect https://www.whatsapp.com/legal/#privacy-policy-information-w...

newscracker 9y ago

To the point, WhatsApp is designed that way. Wire [1], which also has end-to-end encryption of all chats, supports syncing across multiple devices and doesn't have this requirement of a master device. Wire also stores encrypted chats on the server for a limited time, just like WhatsApp does. [1]: https://wire.com https://wire.com