Course piracy usually shows up one of two ways: your full course reappears on a file-sharing site or private group, or a review account walks through your entire curriculum slide by slide. Both are copyright infringement, but they need slightly different evidence.
For a reposted course, the useful evidence is simple: your original platform listing (Teachable, Kajabi, Udemy, whatever you use), and the specific URL or group where it reappeared. For a walkthrough video, timestamp the sections that reproduce your material directly rather than just referencing it. That distinction, between using your material and describing your material, matters. Commentary and critique are generally treated differently from wholesale reproduction, and a notice that doesn't distinguish the two is easier for a platform to dismiss.
One thing worth expecting going in: pirated courses often reappear under a new account after a successful takedown. This isn't a sign the first notice failed. It's a sign the source is worth monitoring rather than treating as a one-time case.
If your course has been copied:
We review the details and identify the appropriate next step for a course-piracy case, including whether it looks like a one-time issue or one worth monitoring going forward.