Slashdot ran a discussion named Leaky Cellphone Nets Can Give Attackers Your Location. What I found interesting is that the operating system of the cellphone is not at stake this time.
Their summary: "GSM cellular networks leak enough location data to give third-parties secret access to cellphone users' whereabouts, according to new University of Minnesota research. 'We have shown that there is enough information leaking from the lower layers of the GSM communication stack to enable an attacker to perform location tests on a victim's device. We have shown that those tests can be performed silently without a user being aware by aborting PSTN calls before they complete,' write the authors, from the College of Science and Engineering, in a paper titled 'Location Leaks on the GSM Air Interface' (Pdf). The researchers are working with carriers and equipment makers, including AT&T and Nokia, to address the security issues."
A bit more from the article: "The researchers demonstrated how easy it was to track down a cellular device within a 10-block area in Minneapolis using a T-Mobile G1 smartphone and open source technology. They never contacted the service provider to conduct the test. "It has a low entry barrier," researcher Denis Foo Kune said, in a statement. "Being attainable through open source projects running on commodity software.""
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