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The security of our devices covers many fronts. A few days ago we saw how, thanks to a combination of attacks, it was possible to bypass the password request screen on Windows computers simply by plugging in a small connector. With this in mind, there's a tremendously powerful little setting on our iPhone or iPad that we'll probably want to turn on.

USB accessories, the key to many attacks

Just yesterday we talked about how Hide UI, the new Grayshift tool, allows you to extract the code from a locked iPhone. How do you get it? Well, the process is relatively simple: after connecting the iPhone to the corresponding machine, it installs malware that captures the device's password once the user enters it.

GrayKey, as a tool, is probably the most attention-grabbing as it is designed to brute-force the device's password, but there are many other cases. Cases that, as Apple expresses when saying that "you cannot create a back door only for the good guys", come from entities that have nothing to do with the forces of law. Faced with this kind of attacks, what can we do? Easy, disconnect the port until the password is entered.

Apple has offered us this option for some time now. We can activate it by following these steps:

1. We open the Settings app on our iPhone or iPad.
2. We enter Face ID and code or Touch ID and code.
3. We enter our code and press OK.< /li>
4. We deactivate USB Accessories under the Allow access when locked section.

With this simple step, when the iPhone or iPad has been locked for more than an hour, any USB accessory connecting to it will not have access to the data interface needed to communicate with the device.

It's that easy. Without being able to communicate with the device, it is not possible to install, read, or modify any file on the device. Undoubtedly, one of the many security measures that Apple adopts to protect the large amount of personal data that we store on our devices.

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