So I created my own brand recently. Spent 3 months on the site and growing the brand and the main competitor in the niche found a link to my site claiming that I did the link (how can they prove that) and also saying that I am infringing on copyright and trademarks. Here is the letter : "It has come to our attention that you have infringed on our copyright and trademarks on your website and have engaged in defamation by making false statements about XXXXX on XDXXX.ccm(random link). You have also used the XXXX trademarks improperly and/or altered our trademarks for your own financial gain. This email serves as notice that we will be serving you with a cease and desist letter and have already contacted GoDaddy and your hosting company Host Gator with a letter requesting your account be suspended for violations of US trademarks and copyrights. We have taken photos of the copyrighted materials that you have used on your site in violation of US LAW and will be including those in our letter. " This company is big and how they found me is crazy. For example, my website name is Naturxxxx.com. They have a a product called Naturxxxxxxx.com. The second word which is xxxx, is completely different. They don't have copyright for Natur. There was a small part of the site that I had copied which was a customer service section which can easily be taken out but besides that, I think this is a complete scare tactic because basically they know that I know what I am doing and they want me wiped out. Guys, I need your help. What do I do?