Brand tags how does it work?

Question

Search Engine Optimization

Hello everyone, I came across such a situation, I am engaged in web development (I specialize in a narrow profile), I offer services for a small circle of people who may need them, so that it would be easier to find me in search engines, I came up with my own unique brand tag, which is not available to anyone. That is, I enter only one tag and infa only mine appeared in the search engine (my VK, pages, etc.)
Recently, for some reason, another similar person began to appear on my brand tag, although he did not have my tag written anywhere on the page, I don't know much about SEO, can anyone help me?
Or did he buy a link with the same name as mine or what?
I just can’t understand why another person appears on a unique low-frequency tag?

Answer 1

This is probably SEO spam, they themselves once indulged in such a way at one time