Search engine poisoning is a negative practice used by malicious groups or attackers to manipulate search engines and mislead users. The practices they often use are keyword stuffing, black hat SEO, fake website creation, and other unethical practices.
This is a very dangerous issue because the fake websites can get ranked on the SERP, and the users can be deceived by them. It can negatively impact the users’ trust in finding any information that they need on the search engine. To prevent this, search engines regularly run checks with algorithms and other processes to cut down on these malpractices.