The FBI recently warned against using free public charging stations, saying hackers can use the connection to transmit malware onto your device.

The agency advised consumers have their own charger and USB cord and use an electrical outlet.

"Avoid using free charging stations in airports, hotels or shopping centers," the FBI's Denver office tweeted last week. "Bad actors have figured out ways to use public USB ports to introduce malware and monitoring software onto devices."

The tweet echos the guidance on the FBI's website. The FBI’s Denver office said in an email that nothing prompted the reminder on social media and that it was a standard public service announcement.

The Federal Communications Commission has also warned against "juice jacking," as the malware attack is known.

Malware installed through a compromised USB port can lock a device or export personal data and passwords to the hacker, according to the FCC. Hackers can then access online accounts or sell the information to others.

How to protect yourself from juice jacking
To avoid juice jacking, the FCC advises you to use an AC power outlet, bring your own USB cable when you travel, and carry a portable charger or external battery.

The FCC also suggests carrying a charging-only cable that prevents data from sending or receiving while charging.


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