Does Having a Publicly Visible Wi-Fi Password Add Security Compared to an Open Wi-Fi Hotspot?

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I handle the Wi-Fi hotspot for a library and have been using WPA2 with an openly distributed passphrase. Another library has no security whatsoever. Is there a greater risk using no security because for our library the passphrase is so openly available to possibly bad guys?

The short answer is absolutely!

Using WPA2 with a password – even a publicly visible one – adds significant levels of security beyond an open Wi-Fi hotspot. Yes, even if everybody in the room knows the password.

When you’ve got an open Wi-Fi hotspot, all of the information that’s being transmitted by each of the computers connected to that hotspot is being transmitted in the clear. That puts the onus of security on each individual computer user. That’s not necessarily a good assumption to make.

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What Information Does a Laptop Leak on a Wireless Network?

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What identifying signatures are given off by my laptop when I’m connected to a wireless network? I’m sure that my WiFi card, hard drive, Windows ID, and other identifying information is broadcast, but what is it? Would I guess that a traffic sniffer would show the make and model of my computer? Or does it go deeper than that?

Actually, it doesn’t go that deep at all. In general, it’s not as much information as you list… as long as you’re doing things right.

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