In search engine optimization (SEO) terminology, black hat SEO refers to the use of aggressive SEO strategies, techniques and tactics that focus only on. The term “black hat” originated in Western films to distinguish the “bad” from the “good”, who wore white hats (see SEO of white hat). A list of tactics and strategies employed by black hat SEO professionals has been openly denounced in the Google Webmaster Guidelines and the Bing Webmaster Guidelines. Black hat SEO refers to a set of practices used to increase the rank of a site or page in search engines through means that violate search engine terms of service.
In the event that your website is the target of a negative SEO spam link campaign, use the Google Webmaster Tools Disavow Links tool after you have tried to contact the webmasters who direct these links to your website to remove them. The same test can be applied to paid search practices to determine if an activity is considered black hat ppc. Either your website has been attacked through a malicious hack, virus or negative SEO campaign of spam links, or you see spam web results in a competitive keyword in which your website ranks. It's crucial to realize that Black Hat's implementation of SEO tactics and strategies can cause your site to be banned from search engines, excluding you from the number one referral source of traffic on the internet.
Black Hat SEO is most commonly defined as a disapproved practice that, however, could increase the ranking of a page on a search engine results page (SERP).