A new study conducted by Manuel Egele, of the Technical University of Vienna, and three other researchers have revealed that about half of all iPhone apps are sharing your sensitive information without your knowledge. Technology Review reports that out of the 1,400 iPhone apps studied, Egele found that over half of them used a tracking technology and collected the 40-digit number unique to each phone. In a small minority of cases, apps "blatantly compromised privacy." 36 accessed the iPhone's location without permission, and five accessed the user's address book without asking.
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