Android applications secretly tracking users by listening to inaudible sound hidden in adverts

An increasing number of android applications are attempting to track users without their knowledge, according to a new report. Over recent years, companies have started hiding "beacons", ultrasonic audio signals inaudible to humans, in their adverts, in order to track devices and learn more about their owners. As ever, users should be selective about the apps they download. Gadgets and tech news in pictures+ show all Gadgets and tech news in pictures1/43 Designed by Pierpaolo Lazzarini from Italian company Jet Capsule. is fuelled by eight electric engines, which is able to push the flying object to an estimated top speed of about 120mph.


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Android apps are secretly eavesdropping on millions of users, researchers claim


Android apps are secretly eavesdropping on millions of users, researchers claim
android apps are secretly listening in on millions of Android users, a new study has found. The apps are embedded with ultrasonic beacons and it these beacons which track users. The researchers also found that the most downloaded of the apps did not warn users of its listening capabilities. "A recent practice embeds ultrasonic beacons in audio and tracks them using the microphone of mobile devices. "Device tracking is a serious threat to the privacy of users, as it enables spying on their habits and activities," the researchers said.

Ultrasonic spy tech in Android apps could be used to de-anonymise Tor users


Ultrasonic spy tech in Android apps could be used to de-anonymise Tor users
Ultrasonic spy tech in android apps could be used to de-anonymise bitcoin and Tor usersGET READY TO THROW your Android smartphone in the bin as new research has revealed that millions of devices are ultrasonic audio signals to covertly track users. However, the beacons could also be used to de-anonymise Bitcoin and Tor users. "The side channel through ultrasonic codes makes the de-pseudonymisation of Bitcoin and de-anonymisation of Tor users possible. Silverpush has thrown some water on the situation though, and has denied that its technology was still being used. An adversary can monitor a user's local TV viewing habits, track their visited locations and deduce their other devices," said the researchers.


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