Free Wi-Fi is available almost everywhere today—airports, railway stations, malls, cafés, hotels, and even public parks. While connecting to these networks can save mobile data, it can also put your personal information at risk if you are not careful.

Cybersecurity experts warn that unsecured public Wi-Fi networks can expose sensitive data such as passwords, banking details, emails, and personal files. Here are the precautions every smartphone user should follow before using public Wi-Fi.

Why is public Wi-Fi risky?

Unlike your home Wi-Fi, many public networks are not encrypted. This means cybercriminals may try to intercept the data being transmitted between your device and the network.

If you use an unsecured network carelessly, your login credentials or financial information could be exposed.

1. Never access banking apps

Avoid logging into:

• Internet banking

• UPI apps

• Credit card accounts

• Investment platforms

Wait until you are using your mobile data or a trusted Wi-Fi connection.

2. Verify the Wi-Fi network name

Hackers often create fake hotspots with names similar to legitimate ones.

For example:

• Airport_Free_WiFi

• Airport WiFi

• Free Airport Internet

Always confirm the official network name with staff before connecting.

3. Turn off Auto-Connect

Many smartphones automatically reconnect to previously used Wi-Fi networks.

Disable Auto-Join or Auto-Connect to prevent your phone from connecting to fake hotspots without your knowledge.

4. Use websites with HTTPS

Before entering any password or personal information, check that the website address begins with:

https://

The padlock icon indicates that the connection is encrypted.

5. Disable file sharing

When connected to public Wi-Fi, turn off:

• File sharing

• Network discovery

• AirDrop (when not needed)

• Nearby Share

This reduces the chances of unauthorized access to your device.

6. Keep your phone updated

Software updates often include important security patches that protect your phone against newly discovered cyber threats.

Install updates regularly for both your operating system and apps.

7. Enable Two-Factor Authentication (2FA)

Even if someone manages to steal your password, Two-Factor Authentication adds an extra security layer by requiring a verification code before login.

Enable 2FA on:

• Gmail

• Social media

• Banking apps

• Cloud storage

• Shopping accounts

8. Forget the network after use

Once you're done using public Wi-Fi, tap Forget Network in your phone's Wi-Fi settings.

This prevents your device from reconnecting automatically in the future.

Common mistakes to avoid

Many people unknowingly increase their risk by:

• Saving passwords on public computers.

• Downloading unknown files over public Wi-Fi.

• Installing apps from untrusted websites.

• Ignoring security warnings shown by their browser.

The bottom line

Public Wi-Fi is convenient, but it should never be treated as completely secure. By avoiding banking transactions, verifying network names, enabling Two-Factor Authentication, and following basic cybersecurity practices, you can significantly reduce the risk of data theft and keep your personal information safe while staying connected.