Black Hat SEO employs several techniques to deceive search engines and manipulate rankings. One common tactic is 'keyword stuffing,' where a webpage is overloaded with keywords in an attempt to rank higher for those terms. Another method is 'cloaking,' which involves presenting different content to search engines than what is shown to users.

'Link farms' and 'Private Blog Networks (PBNs)' are used to generate artificial backlinks to a site, falsely inflating its perceived authority. 'Link spam' also falls under this umbrella, where irrelevant or low-quality links are posted across the web to boost rankings.

Black Hat SEO techniques also include content manipulation tactics such as 'article spinning' and 'content farms.' 'Article spinning' involves rewriting existing content to create seemingly new articles, while 'content farms' produce large volumes of low-quality content aimed at attracting search traffic.

Other deceptive practices include 'hidden text' and 'cookie stuffing.' 'Hidden text' involves placing text on a webpage that is invisible to users but readable by search engines. 'Cookie stuffing' is a more advanced method where cookies are secretly placed on a user's browser to track affiliate marketing activities without their knowledge.

While these Black Hat SEO techniques might offer short-term gains, they come with significant risks. Search engines are continually updating their algorithms to detect and penalize such practices. Websites caught using Black Hat SEO can face severe penalties, including being removed from search engine results, which can have a devastating impact on online visibility and business revenue.