You may have heard that the Tumblr app inadvertently transmitted passwords in the clear on Wi-Fi networks, but what else might be at risk? Over at PCWorld, Eric Geier performed an experiment to see what he could intercept over an unsecured Wi-Fi network at a coffee shop. Using a Windows laptop with a wireless network analyzer and a rooted Android phone, he was able to see the Web pages other connected users were viewing, as well as email and unsecure logins. Geier offers a number of tips to improve Wi-Fi security while in public, including always using SSL connections to Web sites, when available. follow link
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Data That Can Be Sniffed at Wi-Fi Hotspots