Public Wi-Fi can be useful while traveling or working away from home. The better question is not whether every hotspot is dangerous, but what the network can see and whether the sites and apps you use protect their connections. A sensible checklist starts with the correct network name and your device's current security state.
Mistake: relying on a network name alone
Ask the venue for its exact Wi-Fi name instead of choosing the first familiar-looking hotspot. Disable automatic connection to networks you no longer use. CISA's public Wi-Fi advice recommends verifying the intended network and limiting avoidable exposure. A network password is not proof that every website you visit is trustworthy.
Mistake: assuming all traffic is exposed
The FTC's current public Wi-Fi guidance notes that HTTPS encryption is widespread, making public Wi-Fi generally safer than old blanket warnings imply. Check for an encrypted connection to the actual site or app, especially before entering credentials or payment information. A lock icon means the connection is encrypted; it does not certify that the destination is honest.
Mistake: leaving sharing features open
Turn off file or device sharing you do not need, keep the operating system and browser updated, and use a screen lock. If a captive portal asks for unusual personal information, reconsider whether the connection is worth it. For a sensitive task, a trusted mobile connection may be a simpler choice if available.
Better next step
After using a hotspot, disconnect and forget it if you do not expect to return. If you entered information on a site that appeared wrong, change the affected account credentials through a known route. The practical aim is to limit mistakes while recognizing that HTTPS, device settings, and the destination site all matter.
Sources
- Are Public Wi-Fi Networks Safe? — Federal Trade Commission
- Best Practices for Using Public Wi-Fi — CISA