There are many risks when using an unsecured or public Wi-Fi network. Even when the network in question is a Secure public Wi-Fi, if all you need to do is ask one of the employees for the password, then anyone who wants access will have it. What is even worse, many networks will leave their Wi-Fi settings open, allowing anyone who is connected to gain Admin access to the router. Once within the network, there are many ways for cybercriminals to take advantage. One very popular way is with what they call “Man-in-the-Middle” attack. Another common avenue of attack on public Wi-Fi networks is known as Malware Injection.
Hackers will also use unsecured Wi-Fi's to distribute malware. If you have enabled "file-sharing" across your network, the hacker can then plant infected software called Phishing on your computer and on your network. Many hackers have even hacked the "connection point" directly, causing a "pop-up" window to appear during the connection process. Sometimes these Pop-Ups will offer an upgrade to a piece of popular software. Clicking this then installs the malware.
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