Ok, this is about Bonjour, which is pretty cool. David Abramson and I released a multiplayer Horse Racing game, called PocketJockey on iOS 2.1. During game play each device would play its local copy of the William Tell Overture. We used packet latency to synchronize tracks. You would then bounce up and down as though you were a jockey. If you bounced in time to the music your horse would go faster. There was an announcer that would announce the status of your horse, which was also in synch. Up to 4 players could be playing in the same room with the exact same music and announcer emanating from their pocket. All on the original iPhone. To use an overused term, the experience was "magical" That's what you can do with Bonjour.

So, what's the attack vector? A back door, perhaps? Bonjour requires a user approval dialog. A misleading title of the dialog may allow someone to connect. Maybe extract private data.

Imagine a peer-to-peer chat app. Say, in Hong Kong -- during a protest. Or in Kabul -- during an evacuation.