name: Previously Seen Cloud Regions - Update
id: 512f928a-a461-41b4-8984-db4dd2c472e4
version: 3
creation_date: '2020-04-29'
modification_date: '2026-05-13'
author: David Dorsey, Splunk
status: production
description: This search looks for cloud compute events where a compute instance is started and creates a baseline of most recent time, `lastTime` and the first time `firstTime` we've seen this region in our dataset grouped by the region for the last 30 days
search: '| tstats earliest(_time) as firstTimeSeen, latest(_time) as lastTimeSeen from datamodel=Change where All_Changes.action=created by All_Changes.vendor_region | `drop_dm_object_name("All_Changes")` | inputlookup append=t previously_seen_cloud_regions | stats min(firstTimeSeen) as firstTimeSeen max(lastTimeSeen) as lastTimeSeen by vendor_region | where lastTimeSeen > relative_time(now(), `previously_seen_cloud_region_forget_window`) | eventstats min(firstTimeSeen) as globalFirstTime | eval enough_data = if(globalFirstTime <= relative_time(now(), "-14d@d"), 1, 0) | outputlookup previously_seen_cloud_regions | stats count'
how_to_implement: You must be ingesting the approrpiate cloud infrastructure logs and have the Security Research cloud data model installed.
known_false_positives: No false positives have been identified at this time.
references: []
product:
    - Splunk Enterprise
    - Splunk Enterprise Security
    - Splunk Cloud
security_domain: network
schedule: Default Baseline