EC2 waste check
Stopped EC2 with EBS
stopped_ec2_with_ebs
What it finds
Stopped EC2 with EBS: one of the EC2 checks in the compute optimization group. Checks in this group look for: compute capacity that is idle, stopped but still holding paid attachments, oversized for its load, or on an older generation.
Why it costs money
Compute is billed for the time it is provisioned, not for the work it does, so capacity nobody uses keeps billing.
How it is detected
Stopped instance with EBS volumes, priced per attached volume
Detection confidence: MEDIUM. This is the criterion from our public docs. It runs in a local scan with your own read-only credentials.
AWS's own tools
AWS flags this too, under "Amazon EC2 instances stopped".
Checked against the AWS documentation.
Run it yourself
Nothing leaves your machine. The local scan has no telemetry.