MOBICOM

We introduce Integrity (I) regions, a novel security primitive that enables message authentication in wireless networks without the use of pre-established or pre-certified keys. Integrity regions are based on the verification of entity proximity through ...

Location privacy is one of the major security problems in a Wireless Personal Area Network (WPAN). By eavesdropping on the transmitted packets, an attacker can keep track of the place and time of the communication between the mobile devices. The ...

In this paper we propose a location aware approach for key management in sensor networks. As a result, this approach not only provides for better connectivity of sensor nodes in the network but also provides for containment of node compromise. This ...

There are a number of business cases for passive RFID and most are based on the assumption that the RF tags, to include underlying IT systems are secure and authentic, and that privacy and security will not be a concern to the consumer. How do we ...

Although conventional cryptographic security mechanisms are essential to the overall problem of securing wireless networks, these techniques do not directly leverage the unique properties of the wireless domain to address security threats. The ...

Wireless networks are vulnerable to many identity-based attacks in which a malicious device uses forged MAC addresses to masquerade as a specific client or to create multiple illegitimate identities. For example, several link-layer services in IEEE ...

Security is of critical importance for the successful deployment of sensor networks, since it can ensure properties such as data integrity, secrecy, and availability. We have the unique opportunity to ensure security even for early deployments of sensor ...

In this paper, we propose a formal notion of network security for ad hoc networks. We adopt a probabilistic security framework, that is, security is defined by a polynomially bounded adversary model, the cost of attack and the cost of defense. In a ...

Measuring communication anonymity (e.g., unlinkability) of wireless ad hoc networks is a critical but still unsolved problem. In order to solve this problem, we propose a two-step unlinkability measuring approach: (a) statistical traffic analysis-based ...

IP and cellular phone networks used to be isolated from each other. In recent years however, the two networks have started to overlap with the emergence of devices that access the Internet using cellular infrastructures. One important question then, ...

This paper presents SCUBA (Secure Code Update By Attestation), for detecting and recovering compromised nodes in sensor networks. The SCUBA protocol enables the design of a sensor network that can detect compromised nodes without false negatives, and ...

The interoperability of IM (Instant Messaging) and SMS (Short Messaging Service) networks allows users to seamlessly use a variety of computing devices from desktops to cellular phones and mobile handhelds. However, this increasing convergence has also ...

This paper gives an approach to reputation computation that incorporates "uncertainty" based on subjective logic. Uncertainty can arise when a node joins the network and thus has no history, or when a node's behavior changes in a way that is not clearly ...