Bluetooth is a mobile tool that allows you to transfer files from one device to another without having to rely on Wi-Fi or mobile data. This system so far is one of the most effective in its functions, however, there are also some dangers.
Bluetooth technology was developed in 1994 by the Dutch Japp Haartsen and Sven Mattisson. The professionals opted for this technology at the Ericsson company to replace the traditional cable.
The system created decades ago has been a success for a long time, and has become the most secure way to transfer files that currently exists, in addition to requiring little resource and low battery consumption; it has a range of ten meters between one device and another, although it could reach up to one hundred meters, depending on the device used.
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— ipodextreme Wed Nov 11 01:43:37 +0000 2009
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Although it is a system that has many benefits, it must also be taken into account that activated Bluetooth on the cell phone can bring significant risks.
Why is it dangerous to keep Bluetooth on on your cell phone?
Having Bluetooth turned on in the cell phone is dangerous for the user, because having the function activated all the time means that some people could take advantage of stealing the device's information, at least that's what the RedesZone site indicates.
The risk that occurs is not entirely associated with Bluetooth being turned on, since there is an interface that is sending information to others. The aforementioned site details that this action is known as 'Unique Universal', also with the acronym in English UUID.
It is likely that during the aforementioned process, an attack called 'Man in the middle' will occur, which is when a device crosses between the data that is sent between one user and others, and in this way, a third person can read and modify the information.