Whatsapp activated End-to-End Encryption

Today, Whatsapp announced that they have activated End-to-End Encryption to a billion users. This means that no one, aside from you and your recipient can read your messages. Not even they. Unless there’s a powerful decryption tool that can do this(which hackers would need a significant amount of time and effort to create and test), your private chats remain private.
I have a few¬†thoughts about this that I’d like to share:

  1. Adding End-to-End Encryption to the service means that Facebook(being the parent company of Whatsapp) is no longer in possession of information being sent over the service. Facebook will not be able to use Whatsapp information and any concerns that were raised by Facebook-purchasing-Whatsapp can now be put to rest(this is the same as Apple not being in possession of information on an iPhone).
  2. Adding End-to-End Encryption can make the service susceptible to be used by people with bad intentions and no one would be the wiser. Terrorist attacks can be fully planned with Whatsapp groups now that 256 people can be inside one group. A terrifying thought but still a viable one.
  3. In their blog, the Whatsapp staff describe how they spent 2 years developing this technology. Maybe now after its done and published, they will find the time to support cross platform transition between different smartphones?(i.e. moving from iOS to Android and vice versa) It’s a hot request by many people. In today’s world of dynamic technologies, no one stays loyal to just one platform. Doing this big service for users will keep retention rates high for those users which are frequent jumpers¬†between platforms.

So, what are your thoughts about this? What did I miss? Waiting for your comments!
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