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Multi-granular aggregation of network flows for security analysis

Multi-granular aggregation of network flows for security analysis Investigating network flows is an approach of detecting attacks by identifying known patterns. Flow statistics are used to discover anomalies by aggregating network traces and then using machine-learning classifiers to discover suspicious activities. However, the efficiency and effectiveness of the flow classification models depends on the granularity of aggregation. This paper describes a novel approach that aggregates packets into network flows and correlates them with security events generated by payload-based IDSs for detection of cyber-attacks.

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