Our business is heavily dependent on SEO traffic from long tail search. We have over 400,000 pieces of content, all of which we found scraped and published by another site based out of Hong Kong (we're in the US).
Google has a process for DMCA takedown, but doing so would be beyond tedious for such a large set of urls. The scraped content is outranking us in many searches and we've noticed a drastic decrease in organic traffic, likely from a duplicate content penalty.
Has anyone dealt with an issue like this? I can't seem to find much help online.