Free Wi-Fi is awesome, no doubts here. But public networks hide numerous hazards, including even the risk of losing all the funds in your bank account.
Viral Inspiral collected the most crucial tips to ensure you never become a victim of web fraud when using public Wi-Fi access.

The only foolproof way to protect yourself from data theft is to use mobile traffic to make online purchases or Internet banking. A few paid megabytes are a reasonable price for your account safety.