Seann is correct.
For the average internet user the "Public Wi-Fi" can be a shopping place for individuals that want your information. If you set up your system to protect you from those individuals, life can go on without loosing any sleep. If there is HTTPS available from the desired website, I always use that. The Wi-Fi extender is set up as my first line of defense against intruders, followed by my Wi-Fi modem, that acts as my 2nd line of defense, and of course I have my laptop security set up for "Public Internet" usage... and a good PC security program that monitors your connection. If I want, I can have the security status/hits up on a second screen, but the laptops security program notifies me if anyone is trying to gain access. For my stock trading, (Live data stream would kill my Mi-Fi usage limit in a day or two) I use a VPN setup, between my TT and my home computer.
Am I 100% safe, no that is a dream, but it will keep 99.9% of the intruders out. Hopefully that 1/10 of 1% of the intruders is not in the area.
Your connection is only as safe as you make it.
... and I never click on a website that does not have the green check mark on it, produced by my security software.
2013 Jayco Eagle 284BHS
250Watt Grape Solar Panel, MorningStar MPPT 60 Charge Controller
1500 Watt Ramsond PSI, 2 Trojan T145 Batteries (260Ah)
2 - AirSight Wireless IP Cameras (used as rear view cameras)
EnGenius WI-FI extender, D-Link wireless (n) modem
MagicJack Internet Phone
2012 Ford F150XLT, EcoBoost w/3.73
157" Wheel base, HD Towing Package
Our Solar Album http://www.jaycoowners.com/album.php?albumid=329