Sunday Tech Corner with Alex

Public charging stations in places like airports, hotels, and coffee shops may be convenient, but they can also put your personal data at risk. One of the biggest threats is something called “juice jacking,” where a compromised USB port or cable is used to steal information, install malware, or track your activity without you knowing. Unlike a regular wall outlet, USB ports can transfer both power and data, which is what makes them risky. To stay safe, it’s best to use your own wall charger and plug into a standard electrical outlet instead of a public USB port. You can also use a USB data blocker, a small and inexpensive device that prevents data transfer and only allows your phone to charge. Carrying a portable battery pack is another great option so you don’t have to rely on public charging at all.

Additionally, always use your own cable and avoid any that are already plugged in, as they could be tampered with. If your phone prompts you to choose between “charge only” and “file transfer,” always select “charge only,” and never trust unknown devices. A good rule of thumb is to treat public USB ports like public computers—you wouldn’t access sensitive information on one, so you shouldn’t trust it with your phone either.

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