Telegram is an encrypted instant messaging app for iOS and Android devices. Obviously, I wouldnt mention it on this blog if its crypto was perfect. In fact, its far from perfect. Its almost horrifying.
Im not sure if it was in response to some good criticism, but Telegram recently announced a crypto contest. Basically, if you can recover an email address that was encrypted with their secure messaging app, you can win $200,000 USD worth of Bitcoin.