Is Form Spam Protection feature available for all Eloqua instances?

Summary:

Is Form Spam Protection feature available for all Eloqua instances?

Content (please ensure you mask any confidential information):

We want to support our client in reducing the amount of form spam submissions. Eloqua Help Center states that Form Spam Protection can be enabled by submitting an SR. Does this feature require any add-on purchase to be enabled? Our instance is in Standard Trim.

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):