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Comparing to well protected data frames, Wi-Fi management frames (MFs) areextremely vulnerable to various attacks. Since MFs are transmitted withoutencryption, attackers can forge them easily. Such attacks can be detected incooperative environment such as Wireless Intrusion Detection System (WIDS).However, in non-cooperative environment it is difficult for a single station toidentify these spoofing attacks using Received Signal Strength (RSS)-baseddetection, due to the strong correlation of RSS to both the transmission power(Txpower) and the location of the sender.  By exploiting some unique characteristics (i.e., rapid spatial decorrelation,independence of Txpower, and much richer dimensions) of the Channel StateInformation (CSI), a standard feature in 802.11n Specification, we design aprototype, called CSITE, to authenticate the Wi-Fi management frames by asingle station without external support. Our design CSITE, built uponoff-the-shelf hardware, achieves precise spoofing detection withoutcollaboration and in-advance finger-print. Several novel techniques aredesigned to address the challenges caused by user mobility and channeldynamics. To verify the performances of our solution, we implement a prototypeof our design and conduct extensive evaluations in various scenarios. Our testresults show that our design significantly outperforms the RSS-based method interms of accuracy, robustness, and efficiency: we observe about 8 timesimprovement by CSITE over RSS-based method on the falsely accepted attackingframes.

Rejecting the Attack: Source Authentication for Wi-Fi Management Frames using CSI Information