Bluetooth: If you don't use it, it's better to deactivate it, explanation and benefits

He Bluetooth It is a communication protocol for short-range electronic devices that allows us to exchange information.It was launched in 1989 to facilitate communication between devices and remains a very practical application.

Very useful in various situations, such as when we want to transfer information to another device without using our monthly rent or without having to use the internet. Just as we activate it on our devices, we often forget to turn it off, and believe it or not, this can be dangerous.

With the passage of time and technological advances, its use has become increasingly secure and stable. In fact, all smart devices today have this communication protocol, but they are still vulnerable to attacks by unscrupulous individuals.

Why is it dangerous to leave Bluetooth on?

Even if it's not much, it consumes battery. And if we keep many applications active, they consume energy. It's a good idea to consider disabling applications like Bluetooth and any other that you are not using and is running, even if it is in the background.

Bluetooth, even when not in use, is active in the background and that's when criminals can get in..

They may not be linked or paired, but that's not necessary, since the protocol interface is always sending information to other devices in the vicinity.

This way, An attack known as “Man in the middle” can occur. In which a third device interposes itself between the two devices that are exchanging information and modifies the data sent.

Other security experts in Germany, after several tests, also determined a type of vulnerability they called BIAS (Bluetooth Impressionation Attacks). It occurs when the protocol does not perform all validations.

Each of us, whenever we have paired two devices using Bluetooth, has noticed that the pairing time is longer the first time compared to other times.

This is because a link key is created on the devices at the time of connection. It is unique to that connection and is stored forever. Thus, in subsequent connections, they provide a key derived from the original.

So if criminals steal the identity of one of the devices, they can receive the information the other device sends without needing to know the original key.

For this reason it is important to turn off the Bluetooth If you're not using it, according to specialized portals. Tell us, do you use Bluetooth frequently? Do you leave it on all the time?

Image: The Spanish