Public WiFi is insecure. But it doesn't have to be. If you own or manage a venue, like a coffeeshop or restaurant, and provide free and open WiFi, you can help protect your customers without having to provide technical support or waste money. The new reality is that you can offer "open" access without having an open network.
People using open WiFi networks have always been vulnerable, because the contents of their Internet surfing, e-mail, and other kinds of activities are often sent without protection over the wireless network in such a way that any other user on the same network can snoop. This requires no complicated or expensive software. It's free, and increasingly easy for anyone to use. The Firesheep extension for Firefox makes it a couple-click operation to hijack someone's session on the same network with a few dozen popular websites. (Banking and stock trading sites are typically entirely protected.)
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Sarah Polley Aisha Tyler K. D. Aubert Sara Spraker Alexis Bledel
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