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A Streaming Analytics Language for Processing Cyber Data

We present a domain-specific language called SAL(the Streaming Analytics Language) for processing data in a semi-streaming model. In particular we examine the use case of processing netflow data in order to identify malicious actors within a network. Because of the large volume of data generated from networks, it is often only feasible to process the data with a single pass, utilizing a streaming (O(polylog n) space requirements) or semi-streaming computing model ( O(n polylog n) space requirements). Despite these constraints, we are able to achieve an average of 0.87 for the AUC of the ROC curve for a set of situations dealing with botnet detection. The implementation of an interpreter for SAL, which we call SAM (Streaming Analytics Machine), achieves scaling results that show improved throughput to 61 nodes (976 cores), with an overall rate of 373,000 netflows per second or 32.2 billion per day. SAL provides a succinct way to describe common analyses that allow cyber analysts to find data of interest, and SAM is a scalable interpreter of the language.

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