If you use public USB power charging stations at airports, hotels, and other locations, you need this a USB data blocker.
There are three things that must you when you out and about make sure you use a VPN when using public Wi-Fi, and you always make sure you use a USB data blocker, otherwise known as a USB condom
While the risk from using public USB power charging stations at airports, hotels, and other locations might be small, a USB port is a gateway into a device, and allowing any scabby charging station access to my devices seems overall like a bad idea. Where you can you like to use your own chargers of power banks, but for those occasional times when you can’t do that, you carry on keyring a small USB data blocker.
There is a number out there, but try brand is PortaPow. PortaPow’s 3rd-gen USB data blocker blocks all data transfer, but the built-in chip detects the type of device which is connected and swaps between Apple, Universal and Samsung charging specifications, thus enabling the fastest charge possible.
PortaPow 3rd-gen USB data blocker
PortaPow 3rd-gen USB data blocker
There’s also a USB-C version of the 3rd-gen data blocker available.
And, for the ultra-paranoid, PortaPow has a “pure” data blocker that contains no electronics at all other than a wire bridge for the power and even has a see-through case so you can be sure no shenanigans are going on.
Small, easy to carry, and offering a good piece of mind.
Source : ZDNet