Hello
Thanks for the reply.
I already did the solution that you propose, but that solution is valid for Hotlinking (image theft). They don't steal images from me, they simply make me Negative SEO by sending me Backlinks. Instead of sending me the backlinks to a url like the main page, they send them only to the images, but when you click on the backlink that points to my images, no photo of me appears, only their website appears.
I don't think my website is infected and it doesn't send spam. We have it monitored and with anti-access and virus control.