Yeah the harder part is backtracking it to an actual partner account, you’d have to like setup a honeypot store and have them use a collab account? And then prove everything?
And if they are NOT a partner it can be a deadend if not a waste of time(except to play detective 
)
For even if it’s fraud , if it’s international then there’s no recourse 
.
So your idea of masking identities stands.
But what would it take to get shopify to bother about experts integrity.