Risks of using unsecured public USB charging ports include:

1. Data Theft
2. Malware and Viruses
3. Uncontrolled Charging

To help protect yourself when using public USB charging ports:

1. Invest in your own USB charging cable and wall adapter
2. Communicate that you are receiving help from a legitimate power source
3. Install anti-virus protection on your device
4. Watch for noticeable operations and files being added/modified
5. Keep your device secure and updated