JailbreakMe for the Lulz
What's JailbreakMe? It's an easy way to jailbreak an Apple iOS device using a PDF (related) vulnerability. It's done with a "drive-by" style exploit.
All somebody needs to jailbreak their (newer) iPad/iPhone/iPod is to visit jailbreakme.com and to touch the free/install button. The German Federal Office for Information Security has issued a warning about this. They're concerned about the potential for targeted malicious attacks using trojanized versions of the JailbreakMe exploit.
And that's certainly possible, in theory. We've been asked: do we anticipate any attacks against iOS devices? Targeted attacks? No, not really. It could happen, but we don't really anticipate any as such. However, we wouldn't be at all surprised if some AntiSec hacker group attempted something "for the lulz".