Woo, Lai Leng, Zwolinski, Mark and Halak, Basel (2018) Early detection of system-level anomalous behaviour using hardware performance counters. In 2018 Design, Automation & Test in Europe Conference & Exhibition (DATE). vol. 2018-January, IEEE. pp. 485-490 . (doi:10.23919/DATE.2018.8342057).
Abstract
Embedded systems suffer from reliability issues such as variations in temperature and voltage, single event effects and component degradation, as well as being exposed to various security attacks such as control hijacking, malware, reverse engineering, eavesdropping and many others. Both reliability problems and security attacks can cause the system to behave anomalously. In this paper, we will present a detection technique that is able to detect a change in the system before the system encounters a failure, by using data from Hardware Performance Counters (HPCs). Previously, we have shown how HPC data can be used to create an execution profile of a system based on measured events and any deviation from this profile indicates an anomaly has occurred in the system. The first step in developing a detector is to analyse the HPC data and extract the features from the collected data to build a forecasting model. Anomalies are assumed to happen if the observed value falls outside a given confidence interval, which is calculated based on the forecast values and prediction confidence. The detector is designed to provide a warning to the user if anomalies that are detected occur consecutively for a certain number of times. We evaluate our detection algorithm on benchmarks that are affected by single bit flip faults. Our initial results show that the detection algorithm is suitable for use for this kind of univariate time series data and is able to correctly identify anomalous data from normal data.
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