"We're so used to using USB-C for charging that we forget it's also a fully featured data port, and hackers can use people's desperation to find a charger for their phone or laptop to their advantage. Juice jacking is a real threat -- but, fortunately, it's quite easy to protect against it with the right equipment."
"No data lines These cables all feature an and allow charging up to 240W (48V/5A), but because they don't have any data lines, any attempt at communication between the charger and the device being charged is blocked. Also: This USB-C tester will tell you if your Apple chargers are genuine Distinguishable The cables are well built and distinguishable from your other cables by the red strain relief (remember the mantra -- red means power only!) and the tag that gives the specs and highlights that they are data blockers."
"ZDNET's buying advice If you only ever charge at home, the office, or your car, then you don't need a data-blocking cable. The people who need one are those who regularly charge at airports, on trains and buses, and random charging kiosks. These are the people at risk of juice jacking."
USB-C ports carry both power and data, which makes public charging a vector for data theft or malware through juice jacking. People seeking chargers in airports, trains, buses, and kiosks face the highest risk. Power-only, data-blocking cables remove USB data lines while allowing charging up to 240W (48V/5A), preventing any communication between charger and device. These cables are available in multiple lengths and are marked with red strain relief and spec tags to make them easily identifiable. Data-blocking cables are often more convenient than dongles, though dongles let users switch back to data when needed.
Read at ZDNET
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