FBI warns against using public phone chargers.

The FBI has warned Americans to avoid using public phone chargers in airports, hotels, and malls due to the risk of "juice jacking," where hackers install malicious code into public charging stations to read and steal data from mobile devices. The safest option is to use your own charger and a wall outlet or carry a portable battery. The FBI also recommends avoiding sensitive transactions on public WiFi, keeping devices' software up to date, and using strong and unique passphrases for online accounts.