Which SEO practices are unethical, and what risks can they pose?

Unethical SEO centers on deceiving users, manipulating search systems, or maliciously undermining competitors to improve rankings. Common practices include cloaking, deliberately hiding keywords, buying links to manipulate rankings, copying content, and hacking other websites. The risks extend beyond search visibility: Google’s official policies state that sites that violate its policies may rank lower or disappear from search results entirely. Activities involving infringement or attacks may also create legal problems. However, not every use of keywords, instance of cross-linking between websites, or drop in rankings can be directly attributed to unethical SEO. (S1, S4, S14)

Who sees the content, and whether it misleads them, are key distinctions

Google’s definition of “cloaking” includes the intent to manipulate rankings and mislead users—for example, showing search engines a travel page while showing human visitors a page about discounted pharmaceuticals. The key question is not simply whether the displayed content differs, but whether those differences are used to deceive search systems and visitors. (S1)

• Making text the same color as the background to hide keywords and manipulate rankings.
• Repeating keywords so excessively that the article no longer reads naturally.
• Claiming to offer a feature such as an online dictionary, but deliberately directing visitors to ads without providing the expected content.

These are unethical practices listed in a 2023 Semrush article. The problems lie in concealment, excess, and deception; the mere presence of keywords in an article does not establish that it is cheating. (S4)

Link practices must be assessed by their purpose, not treated alike

A 2023 Semrush article classifies paying for backlinks to improve rankings as link spam, while distinguishing payments made for sponsorship purposes. However, the supplied material does not explain the full compliance requirements for sponsored links, so it cannot be assumed that labeling a link as sponsored eliminates the risk. (S4)

There are distinctions to make with private blog networks, too: a group of websites that offer high-quality recipes and link to one another does not necessarily violate guidelines. If a network exists solely to provide backlinks, however, the article considers it unethical and at risk of penalties. Whether the links are backed by substantive content and value matters more than the mere existence of cross-links. (S4)

The problems with copying content go beyond rankings

A 2023 Semrush article states that copying and publishing other people’s content without proper attribution is not only unethical but may also lead to intellectual property disputes. It also objects to rewriting existing articles into alternate versions to produce unoriginal content. This does not mean that all revisions are improper, nor does it imply that attribution necessarily grants permission to use the content. Whether infringement has occurred cannot be determined solely by an SEO classification. (S4)

Negative SEO involves malicious attacks, but cannot explain every decline

Hacking a competitor’s website, injecting spam content, and impersonating a competitor to request the removal of high-quality links are among the negative SEO tactics listed in the material. (S4, S14) The sources differ in their emphasis on effectiveness: a 2014 article on Neil Patel’s website describes the threat as real, while a Semrush article dated 2020 says attacks are usually ineffective and that search engines are increasingly able to recognize and ignore them. (S5, S14)

Thus, an attack’s unethical intent does not mean it will necessarily succeed. A decline in rankings or organic traffic cannot, on its own, be treated as evidence of an attack by a competitor. Legal risks must also be assessed based on the specific conduct, rather than labeling all negative SEO as illegal. (S14)