While newer phones have ditched the cable charger and moved on to wireless charging, older models still rely on power cords to transmit power to the mobile device. The problem with this setup is that the cable used for charging can also be used for transferring data. This setup is easily exploitable, and trust opportunists to do just that. When you use a public cable, they gain user access by leveraging the USB data/power cable to illegitimately access your phone’s data and/or inject malicious code into your device.