It’s a fast way to give your phone some juice that could also give hackers direct access to your information. The FBI has issued a serious warning against using free public phone chargers, saying cunning delinquents have been known to use the USB ports to infect phones with dangerous malware and software that can give hackers access to your phone, tablet or computer. “Avoid using free charging stations in airports, hotels or shopping centers,” a tweet from the official FBI account read. “Carry your own charger and USB cord and use an electrical outlet instead.” The Federal Communications Commission previously...