Hi folks, I am new member and really newbie about Black hat seo and i request a help forum you guys. If i need to pay for that work, please let me know. My costumer wants to de-index multiple website's URL / rank down in google. Is it possible with proxy attack? Is it possible with spam links? Is there any other method? or if they have seo experts? isnt it possible to check backlinks from ahrefs or some other tools and use disavow tools? I am looking for quality services and private solutions. Thanks everyone.