Analytical types |
Description |
Deviation in Count |
Identifies deviation in the number of occurrences of an activity |
Deviation in Volume |
Tracks deviation in transaction volume for any numeric field in the log source |
First occurrence of an event |
Detects first occurrence of any event/activity |
Rare occurrence of an event |
Compares an event’s frequency to past behaviors |
Deviation in Count
Detect unusual peak and trough of any activity in your environment with Deviation in count. For example, sign failure rates abnormally higher than usual, accessing an unusual number of resources in an environment, unusual number of files modified by an user.
For each combination of rows from the selected UDM fields, the model generates a baseline behavior.
Deviation in Volume
Deviation in volume spots any anomalous transactional volume in your environment. For example, sudden spike in data uploaded from a host. This model requires a numeric field to establish a baseline and a string field to create attribution.
For the defined aggregation window, you can choose if the model should profile the numeric field(field Metric name in the screenshot) either by maximum, minimum, average, or sum.
First occurrence of an event
The first occurrence detects activities that has not been observed in your environment before. For example, a service account accessing a database for the first time. The first occurrence model learns a normal behavior for any entity or any UDM filed in the log source to track deviation.
Rare occurrence of an event
Rare occurrence learns past behaviors for the combination of UDM fields selected to discern a rare behavior from a repeated behavior. Repeating an activity that is currently considered rare will eventually cause the model to learn and no longer distinguish it as rare.
Note: Rare occurrence model will also detect the first occurrence for the combination of UDM fields. To precisely track the first occurrence, along with attaching distinct priorities and tactics, create a first occurrence model.
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