25C3 (25. Chaos Communication Congress) is over. Pics are available on Flickr. A short view on the event has been published by ZDF (I was standig just next to the cam in the last scene where you see a MikroKobter in action).

Yes, you had to watch out not to be hacked by someone, for example over a custom built GSM Network

Message received over GSM at 25C3
(My recommendation: disable your iPhone at the congress – or at least activate Airplane mode)

Images of the congress are available here, here and here. Some snapshots:

25C3 Talk - Hacking the iPhone 25C3 - The BCC at Night