Free Wi-Fi is everywhere — coffee shops, airports, hotels, libraries. It is convenient, and most of the time nothing bad happens when you use it. The honest answer to whether it is safe depends entirely on what you are doing on it.
What makes public Wi-Fi risky
The core problem with most public Wi-Fi is that it is unencrypted. On an unencrypted network, the data travelling between your device and the router is not scrambled — meaning someone else on the same network with the right tools can potentially read it.
The most well-known attack is a man-in-the-middle attack — an attacker positions themselves between your device and the network and reads the data passing through. Another common tactic is the rogue hotspot — a fake Wi-Fi network with a name almost identical to the real one, set up and controlled by an attacker.
What is and is not safe on public Wi-Fi
Generally lower risk: Reading news, watching videos, browsing social media without entering passwords, and visiting websites showing the HTTPS padlock in your browser.
Avoid on public Wi-Fi: Logging into your bank, making purchases, entering payment details, accessing work systems, or logging into your email account.
Use mobile data instead
For anything sensitive — your bank, email, any account login — simply turn off Wi-Fi and use your phone’s mobile data connection. Mobile data is encrypted by default. The data usage difference for checking a bank balance or sending an email is genuinely minimal. This one habit eliminates most public Wi-Fi risk with zero complexity.
Using a VPN on public Wi-Fi
A VPN creates an encrypted tunnel for all your internet traffic, making it unreadable to anyone attempting to intercept it — even on an unencrypted public network. ProtonVPN offers a genuinely functional free tier with no data limits. Paid options like NordVPN offer faster speeds if you travel frequently.
Your Wi-Fi safety checklist
- Always verify the official network name with staff before connecting
- Never access your bank or financial apps on public Wi-Fi
- Switch to mobile data for any sensitive activity
- Only use sites showing the HTTPS padlock in your browser
- Consider ProtonVPN (free) if you regularly use public Wi-Fi
- Disable automatic Wi-Fi connection in your device settings
- Select “Forget Network” when you are done to prevent automatic reconnection
Public Wi-Fi is fine for casual browsing. For banking, email, or account logins — use your mobile data. One second to switch. Significant protection in return.