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arXiv 2103.11519cs.CRcs.LG
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利用在线不确定性估计提高硬件恶意软件检测器的可信度

Towards Improving the Trustworthiness of Hardware based Malware Detector using Online Uncertainty Estimation

Georgia Institute of Technology(佐治亚理工学院)

Harshit Kumar, Nikhil Chawla, Saibal Mukhopadhyay

摘要:

使用机器学习(ML)模型的基于硬件的恶意软件检测器(HMD)在检测恶意工作负载方面显示出了希望。然而,在这些HMD中使用的传统的基于黑盒的机器学习(ML)方法未能解决不确定的预测,包括对零日恶意软件进行的预测。HMD中使用的ML模型对决定模型是否“知道它知道什么”的不确定性是不可知的,严重破坏了它的可信度。我们提出了一种基于集成的方法,当HMD的ML模型遇到未知的工作负载时,该方法可以量化HMD的ML模型所做预测的不确定性。我们在文献中提出的两种不同的HMD上测试了我们的方法。我们表明,所提出的不确定性估计器可以检测基于电源管理的HMD的未知工作负载的>90%,并得出结论,重叠的良性和恶意软件类破坏了基于性能计数器的HMD的可信度。

英文摘要:

Hardware-based Malware Detectors (HMDs) using Machine Learning (ML) models have shown promise in detecting malicious workloads. However, the conventional black-box based machine learning (ML) approach used in these HMDs fail to address the uncertain predictions, including those made on zero-day malware. The ML models used in HMDs are agnostic to the uncertainty that determines whether the model "knows what it knows," severely undermining its trustworthiness. We propose an ensemble-based approach that quantifies uncertainty in predictions made by ML models of an HMD, when it encounters an unknown workload than the ones it was trained on. We test our approach on two different HMDs that have been proposed in the literature. We show that the proposed uncertainty estimator can detect >90% of unknown workloads for the Power-management based HMD, and conclude that the overlapping benign and malware classes undermine the trustworthiness of the Performance Counter-based HMD.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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