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To be trustworthy, security-sensitive applications must be small and simple--or wimpy. Because of their limited size and functions, they must securely compose with large, untrusted commodity systems--or giants--to survive. A security architecture based on a wimpy kernel can provide on-demand isolated I/O channels for wimp applications without bloating the underlying trusted computing base.
To be trustworthy, security-sensitive applications must be formally verified and hence small and simple, i.e., wimpy. Thus, they cannot include a variety of basic services available only in large and untrustworthy commodity systems, i.e., in giants. Hence, wimps must securely compose with giants to survive on commodity systems, i.e., rely on giants' services but only after efficiently verifying their...
In this paper, we propose a novel and robust fall detection system by using a one class support vector machine based on video information. Video features, including the differences of centroid position and orientation of a voxel person over a time interval are extracted from multiple cameras. A one class support vector machine (OCSVM) is used to distinguish falls from other activities, such as walking,...
Conventional privilege separation can effectively reduce the TCB size by granting privilege to only the privileged compartments. However, since they this approach relies on process isolation to ensure security assurance, malware exploiting against kernel components can easily compromise. Meanwhile, the frequent inter-process communications between separated processes inevitably incur notable overhead...
Commodity operating systems are usually large and complex, leading host-based security tools often provide inadequate protection against malware because execution environment for software is untrusted. As a result, most software currently uses various ways to defend malware attacks. However, these approaches not only raise the complexity of the software but also fail to offer an engrained security...
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