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User authentication is always the first step of security services/mechanisms in computing infrastructures. However, mobile devices and clouds bring challenges and also new dimensions into this topic, such as limited computing power, migrating objects, and various embedded sensors. When a resource located either in a mobile device or in a cloud is requested, associated security policies will trigger...
The weak trust model in Border Gateway Protocol (BGP) introduces severe vulnerabilities for Internet routing including active malicious attacks and unintended misconfigurations. Although various secure BGP solutions have been proposed, the complexity of security enforcement and data-plane attacks still remain open problems. We propose TBGP, a trusted BGP scheme aiming to achieve high authenticity...
Web applications are becoming the predominant means by which users interact with online content. However, current authentication approaches use a single authentication credential to manage access permissions, which is too inflexible for distributed programs with unique security and privacy requirements for each component. In this paper, we introduce DAuth, an authorization mechanism that allows fine-grained...
Cellphones are increasingly becoming attractive targets of various malware, which not only cause privacy leakage, extra charges, and depletion of battery power, but also introduce malicious traffic into networks. In this work, we seek system-level solutions to handle these security threats. Specifically, we propose a mandatory access control-based defense to blocking malware that launch attacks through...
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