Defending your clients against wireless hackers with sniffers
When probing for previous networks, a client exposes information about itself and opens itself up for attack. A network listener can detect the networks being probed for. If a corporate client uses an obvious network name such as "My Fortune 500 Company", an attacker not only knows that the user likely works at that company, but that the client system may have sensitive data worth attacking. A network SSID does not carry any inherent security information.
At Network World.
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