Using call stack snapshots to detect anomalous computer behavior
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United States of America Patent
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Dec 12, 2017
Issued Date -
N/A
app pub date -
Nov 22, 2015
filing date -
Oct 29, 2015
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Abstract
Detecting computer anomalies by determining probabilities of encountering call stack configurations at various depths, the call stacks being associated with software application instances on computers having the same operating system, where snapshots of the call stacks are recorded on the computers responsive to detecting predefined software application events, determining entropies of call stack configurations at various call stack depths using their associated probabilities, determining stack frame rarity scores of call stack configurations at various depths based on their associated stack frame entropies in accordance with a predefined rarity function, determining a call stack rarity score of any given call stack configuration as the maximum stack frame rarity score of the given configuration, and detecting an anomaly associated with any given one of the computers where any of the snapshots recorded on the given computer is of a call stack whose call stack rarity score meets a predefined anomaly condition.
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