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Wednesday, July 27, 2022

Bluetooth Signals Used to Identify, Track Smartphones

Tracking Smartphones

Bluetooth Signals Can Be Used to Identify, Track Smartphones

UC San Diego News Center

Ioana Patringenaru, June 8, 2022

Engineers at the University of California, San Diego (UCSD) have demonstrated an exploit that taps Bluetooth beacon signals emitted by smartphones to track individuals. The researchers showed the signals bear a unique fingerprint, which UCSD's Nishant Bhaskar said poses a serious threat "as it is a frequent and constant wireless signal emitted from all our personal mobile devices." The fingerprint stems from manufacturing flaws in hardware that are unique to each device, which generate novel Bluetooth distortions that attackers could use to bypass anti-tracking measures. Experiments validated the feasibility of using the exploit in real-world settings, although the researchers noted it requires attackers to possess significant expertise. ... 

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