Black Hat: Web Apps over Wi-Fi puts Data at Risk

From Macworld
Users who access Google’s Gmail or the Facebook social-networking site over Wi-Fi could put their accounts at risk of being hijacked, according to research from Errata Security, a computer security company.

Most Web sites use encryption when passwords are entered, but because of the expense, the rest of the information exchanged between a browser and a Web site is not encrypted, they wrote in a paper presented at the Black Hat 2007 security conference in Las Vegas this week.

Using a packet sniffer, which can pick up data transferred between a wireless router and a computer, it’s possible to collect cookie information while a user is accessing one of those sites over Wi-Fi.

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