IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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GCP Pub/Sub Topic Creation

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GCP Pub/Sub Topic Creation

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Identifies the creation of a topic in Google Cloud Platform (GCP). In GCP, the publisher-subscriber relationship (Pub/Sub) is an asynchronous messaging service that decouples event-producing and event-processing services. A topic is used to forward messages from publishers to subscribers.

Rule type: query

Rule indices:

filebeat-*
logs-gcp*

Severity: low

Risk score: 21

Runs every: 5m

Searches indices from: None (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

https://cloud.google.com/pubsub/docs/admin

Tags:

Elastic
Cloud
GCP
Continuous Monitoring
SecOps
Log Auditing

Version: 9

Rule authors:

Elastic

Rule license: Elastic License v2

Investigation guide

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## Setup

The GCP Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.

Rule query

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event.dataset:gcp.audit and event.action:google.pubsub.v*.Publisher.CreateTopic and event.outcome:success

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Collection
- ID: TA0009
- Reference URL: https://attack.mitre.org/tactics/TA0009/
Technique:
- Name: Data from Cloud Storage Object
- ID: T1530
- Reference URL: https://attack.mitre.org/techniques/T1530/

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