[langsoul-com]

I wonder if the best bet would be to hash the main site and its images. Then retroactively scan sites with similar HTML hash and flag them?

Fairly sure you could do a HTML search with Google, 7 stores having extremely similar HTML and images seems rather unlikely.

Effectively, it's virus total but for copycat sites.

[justusthane]

But there's no such thing as a "similar" hash - change one character in the HTML, and the hash would be completely different.