There are attacks that are possible in the real world that Telegram's (& this example) contest deny. It's like tying a person to a chair, and challenging them t

There are attacks that are possible in the real world that Telegram's (& this example) contest deny. It's like tying a person to a chair, and challenging them to run a marathon, to prove that humans can't run marathons. In the real world, people aren't tied to chairs and humans can run marathons.