Detection: VPC Flow Log Deleted

Overview

Detect when a VPC flow log was deleted in an AWS account. Deleting flow logs reduces visibility into network traffic, making it harder to detect suspicious activity, troubleshoot issues, and maintain compliance. Monitoring flow log deletions ensures network visibility and supports incident detection and response.

References:

Usage

Run the detection in your terminal:

powerpipe detection run aws_cloudtrail_log_detections.detection.vpc_flow_log_deleted

Snapshot and share results via Turbot Pipes:

powerpipe login
powerpipe detection run aws_cloudtrail_log_detections.detection.vpc_flow_log_deleted --share

SQL

This detection uses a named query:

select
  tp_timestamp as timestamp,
string_split(event_source, '.')[1] || ':' || event_name as operation,
request_parameters ->> 'flowLogIds' as resource,
user_identity.arn as actor,
tp_source_ip as source_ip,
tp_index as account_id,
aws_region as region,
tp_id as source_id,
*

from
  aws_cloudtrail_log
where
  event_source = 'ec2.amazonaws.com'
  and event_name = 'DeleteFlowLogs'
  and error_code is null

order by
  event_time desc;

Detection: VPC Flow Log Deleted

Overview

Usage

SQL

Tags