Apple iPad vulnerable to data loss

Apple iPad and other popular devices vulnerable to data loss through "substrate hack"
by Paul Ducklin on April 1, 2011
Recent research by SophosLabs has discovered an alarming vector by which personal and private data can be exfiltrated from modern-day portable computing devices such as smartphones and tablets, including the popular Apple iPad and iPad 2.

This attack is surprisingly easy to pull off, so we've made the decision not to release precise details in order to reduce the likelihood of it being exploited by cybercriminals.

Any reasonably small, uncovered, device is at risk of this sort of attack, which SophosLabs has dubbed a substrate hack.

Ironically, the most effective countermeasure identified so far is extremely low-tech.

The substrate hack involves data leakage through the physical substrate of the device itself - in other words, through the actual metal/plastic/glass package in which the hardware of the device is contained.
further info here
http://nakedsecurity.sophos.com/2011/04/01/apple-ipad-vulnerable-to-data-loss-through-substrate-hack/