How Wi-Fi Attackers Poison Browsers

"Public Wi-Fi networks such as those in coffee shops and airports present a bigger security threat than ever to computer users because attackers can intercede over wireless to "poison" users' browser caches in order to present fake Web pages or even steal data at a later time.That's according to security researcher Mike Kershaw, developer of the Kismet wireless network detector and intrusion-detection system, who spoke at the Black Hat conference.

He said it's simple for an attacker over an 802.11 wireless network to take control of a Web browser cache by hijacking a common JavaScript file, for example."