What is mean by Black Hat SEO?

          Black hat SEO is a type of unscrupulous search engine optimization tactic used to raise a website's search engine results page (SERP) ranking illegitimately or lower the ranking of a competitor's site. The position of a website on a search results page can be crucial to reaching your audience.

Black hat SEO refers to a set of techniques that target only search engine results, rather than taking the human audience into account. The techniques involved can range from spammy to outright malicious, all of which go against the guidelines set out by the search engine.