SpiderLabs showed a rootkit at the Black Hat conference today that could compromise an Android phone without its owner's knowledge. The exploit, handed out on DVD at the hacking and security meetup, would let the wielder get complete control and personal data from an Android phone without triggering alerts. Team lead Nicholas Percoco said the app took just two weeks to build and would affect even modern Android 2.1 devices such as the HTC Desire and Legend.