The FBI just issued a warning to the public against using free public USB charging ports, such as those found at airports or malls, because they’ve been found to be ports of entry for malware. 

A recent tweet by the FBI Denver field office advised that bad actors (i.e. people with nefarious intentions, not Steven Seagal) have devised a

Source: Hot Hardware – FBI Warns You Should Never Recharge Your USB Device At A Public Charging Station