Splunk Search

AnomaliDetection does not detect outlier data

ashishmgupta
Explorer

In the below dataset, there are two different ISPs for the user from their usual ones.
NordVPN for John and Quadranet for Jill – but this search using anomalidetection is detecting only john’s but not Jill’s.
Any idea why and what is the better way to detect the ISP outlier?

source="isp_data2.csv"  index="test" sourcetype="csv"
| anomalydetection "ISP" "EmailAddress" action=annotate
| eval isOutlier = if(probable_cause != "", "1", "0")
| table "ISP" "EmailAddress", probable_cause, isOutlier
| sort 100000 probable_cause

 

 

EmailAddressISPtimestamp
john@example.comComcast1/1/2020
john@example.comComcast1/2/2020
john@example.comComcast1/3/2020
john@example.comComcast1/4/2020
john@example.comComcast1/5/2020
john@example.comComcast1/6/2020
john@example.comComcast1/7/2020
john@example.comComcast1/8/2020
john@example.comComcast1/9/2020
john@example.comComcast########
john@example.comComcast########
john@example.comComcast########
john@example.comComcast########
john@example.comNordVPN########
john@example.comComcast########
john@example.comComcast########
john@example.comComcast########
john@example.comComcast########
john@example.comComcast########
john@example.comComcast########
john@example.comComcast########
john@example.comComcast########
john@example.comComcast########
jill@example.comSpectrum2/1/2020
jill@example.comSpectrum2/2/2020
jill@example.comSpectrum2/3/2020
jill@example.comSpectrum2/4/2020
jill@example.comSpectrum2/5/2020
jill@example.comSpectrum2/6/2020
jill@example.comSpectrum2/7/2020
jill@example.comSpectrum2/8/2020
jill@example.comSpectrum2/9/2020
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comQuadranet########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum########
jill@example.comSpectrum3/1/2020
Labels (1)
0 Karma
Get Updates on the Splunk Community!

New in Observability Cloud - Explicit Bucket Histograms

Splunk introduces native support for histograms as a metric data type within Observability Cloud with Explicit ...

Updated Team Landing Page in Splunk Observability

We’re making some changes to the team landing page in Splunk Observability, based on your feedback. The ...

New! Splunk Observability Search Enhancements for Splunk APM Services/Traces and ...

Regardless of where you are in Splunk Observability, you can search for relevant APM targets including service ...