PURPOSE Unknown USB ports can create security risk if they attempt to transfer data or interact with your device. SAFER OPTIONS Use your own power adapter, trusted charger, portable battery pack, or charge-only cable. WATCH FOR PROMPTS If your device asks whether to trust the connected system or allow data access, deny it unless you intentionally connected to a trusted computer. AVOID Avoid unknown public USB ports when handling sensitive work. BEST PRACTICE Carry a trusted charger during travel.