Hello, i found some site linked to my site in ahref by some kind of backlink from some strange domains like 819987.7w0atz2(.)com or some draft domain that I don't know. Code: [mydomain.com/?cat=大奖TTG老虎机注册送彩金www.djyl18.com&s=大奖TTG老虎机注册送彩金www.djyl18.com] this url like something (.) com/?cat come from searching functions on wordpress. Then, I don't know if my site is hacked or malware code attacted or no, if somebody has seen this error, or this kind of backlink to your site, Please hep me too, Thank you for reading my problem.