Privacy, in general, refers to the ability of an entity to stop information about themselves from becoming known to people other than those whom they choose to give the information. In the world of wireless network, while this technology promises to produce a massive amount of data transmission, an adversary can use seemly irrelevant fragment of data, assemble them, and derive much more sensitive information. Hence, adversaries does not have not be physically present to maintain surveillance,but they can gather information in a low-risk, anonymous manner.
By listening to the data, the adversary could easily discover the communication contents. When the traffic conveys the control information about the network configuration, which contains potentially more detailed information about the communication protocol, the eavesdropping can act effectively against the privacy protection.
This is an advanced version of combination with monitoring and eavesdropping. An attacker could potentially monitor the increase in the number of transmitted packets between certain reader or users, and could signal that a specific tag has registered activity. Through the analysis on the traffic, some users with previous activities can be effectively identified. Thus, this act violate the identity privacy.
After an adversaries insert a rogue reader or compromise a legitimate user tags in the network, the attackers impersonate some seemly normal tags to fool the readers.
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