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The Lying NAS Problem NAS can provide different information to the peer and the Authentication Server Fraud To peer: “I offer access to the Joe’s Hotspot” To AS: “I offer access to the CARRIER network” Fooling user into associating to a “free” network then charging for it Spoofing To peer: “I’m AP57” To AS: “I’m AP59” Motivation: DoS on neighbor graph calculations |