"Protect Your Devices from Juice Jacking with a USB Condom"
The FBI and Federal Communications Commission have warned about the dangers of public USB charging ports, which can introduce malware or drain your battery. To protect against this, experts have come up with "USB condom" dongles that can be plugged into public ports to add an additional layer of protection. However, it's unclear how widespread actual incidents of juice jacking are, and some experts are skeptical of the claims. It's best to avoid public charging ports altogether and bring your own external charger.