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In this paper, we discuss security problems, with a focus on collaborative attacks, in the Worldwide Interoperabil-ity for Microwave Access (WiMAX) scenario. The WiMAX protocol suite, which includes but is not limited to DOCSIS, DES, and AES, consists of a large number of protocols. We present briefly the WiMAX standard and its vulnerabilities. We pinpoint(More)
Service-Oriented Architecture (SOA) is becoming a major paradigm for distributed application development in the recent explosion of Internet services and cloud computing. However, SOA introduces new security challenges not present in the single-hop client-server architectures due to the involvement of multiple service providers in a service request. The(More)
Mobile Ad-hoc Networks (MANETs) enable users in physical proximity to each other to exchange data without the need for expensive communication infrastructures. Each user represents a node in the network, and executes a neighbor discovery Typically, nodes broadcast beacon messages that are received by other participants within the sender’s(More)
Secure and dynamic clustering protocols, which are essential in wireless sensor network, are becoming a heated research area. However, the proposed protocols are vulnerable to wormhole attack. Most recently, SecDEACH protocol is proposed and claimed to provide both the resilient cluster head election, preserving a dynamic clustering, and the secure cluster(More)
Mixed-mode malware contains user-mode and kernel-mode components that are interdependent. Such malware exhibits its main malicious payload only after it succeeds at corrupting the OS kernel. Such malware may further actively attack or subvert malware analysis components. Current malware analysis techniques are not effective against mixed-mode malware. To(More)
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