Negative SEO

Negative SEO is the deliberate attempt to damage another site’s search rankings, usually a competitor’s. Unlike most of SEO, which is about improving your own visibility, negative SEO is adversarial: the goal is to make Google trust the target less, or to remove its content from results entirely.

The threat is real but widely exaggerated, and the shape of it has changed. The tactics that dominated a decade ago barely work now, while a smaller set of vectors that bypass Google’s ranking systems altogether have become the genuine risk. Understanding which is which is the difference between wasting effort on a non-problem and missing an attack that actually lands.

What are the negative SEO attack vectors?

Negative SEO covers several distinct methods, which matter to separate because they now differ enormously in how effective they are:

• Toxic link attacks. Pointing large volumes of spammy backlinks (gambling, adult, pharma, link farms) at a target, sometimes with over-optimised exact-match anchor text, on the theory that Google will read the profile as manipulation and penalise the target.
• Fraudulent DMCA takedowns. Filing false copyright complaints to have a competitor’s pages removed from Google Search. Covered in depth in the news report on fake DMCA takedowns as a negative-SEO weapon.
• Content scraping. Copying a target’s content and republishing it widely to create duplication and, in some cases, file first-publisher claims against the original.
• Hacking and content injection. Compromising a site to insert spam, cloaked pages, or malicious redirects, which can trigger a hacked-content manual action.
• Fake link-removal requests. Impersonating the target to ask legitimate linking sites to remove genuine, valuable backlinks.
• Fake reviews. Flooding a business with fake negative reviews to damage local and reputational signals.

Do toxic backlink attacks still work?

Mostly not, and that answer shapes everything else about negative SEO in 2026.

Google’s spam defence, SpamBrain, launched in 2018,¹ and Google trained it on link spam in December 2022. The design of that update is the whole answer to the negative-SEO question: Google’s aim is to “nullify these unnatural links at scale”, and the stated consequence is that “ranking may change as spammy links are neutralized and any credit passed by these unnatural links are lost”.² The credit stops counting; the site receiving the links is not demoted for having received them. If Google penalised sites for the links pointing at them, negative SEO would be trivial. Because it instead discounts unnatural links, pointing spam at a competitor usually achieves nothing.

The scale of it is harder to state currently than it looks, because Google stopped publishing the figures. Its last webspam report, covering 2022, said SpamBrain had detected “200 times” more spam than when it first launched and that “more than 99% of visits from Search are spam-free”.¹ Google has published no annual webspam report since, so treat those as the last figures on the record rather than as a current measurement.

A site with a healthy link profile absorbs spam links as noise. A domain with several hundred genuine, relevant backlinks is not going to be sunk by a few thousand toxic ones. A reliable defence against link-based negative SEO is simply having enough real authority that the spam is statistically irrelevant.

This is also why the disavow file matters far less than it once did. Google now ignores most spam links automatically, so disavowing them is redundant in the ordinary case. Reserve the disavow tool for the specific situation it is still meant for. Google states it as a two-part test: a considerable number of spammy links and a manual action they have caused or will likely cause, where you cannot get the links removed at source.

Which vectors do still work?

The effective attacks in 2026 are the ones that never touch Google’s link evaluation, because they exploit other systems:

Fraudulent DMCA takedowns. This is currently an effective negative-SEO vector. Google acts on copyright complaints without verifying the submitter or the substance of the claim, and Search Console does not reliably surface the notice, so a page can vanish from search results before the owner knows why. It has been used against major publishers, and the tactic is escalating.

Hacking and injection. A compromised site that starts serving spam or cloaked pages can earn a hacked-content manual action and lose trust fast. This overlaps with the involuntary side of parasite SEO, where an attacker exploits your domain’s authority to host their content.

Content scraping at scale. Less damaging than it used to be, since Google is generally good at identifying the original source, but wide republication can still cause attribution confusion, particularly for newer or lower-authority sites whose originals Google has not firmly established.

How do you defend against negative SEO?

Defence is mostly monitoring, because the effective attacks are ones you need to catch quickly rather than prevent outright.

• Watch for sudden deindexing. Check Search Console periodically for pages dropping out of the index without explanation, the signature of a fraudulent DMCA takedown. Cross-reference against the Lumen database, which publishes the copyright notices Google acts on, and file a counter-notice if a takedown is baseless.
• Set brand alerts. A Google Alert on your brand name and common misspellings surfaces scraped content, impersonation, and reputation attacks within hours.
• Keep the site secure. Patch software, use strong authentication, and audit for unfamiliar pages in your index. Hacking is a security problem before it is an SEO one.
• Build genuine authority. A strong foundation of quality links and content is durable protection against link-based attacks, because it makes spam irrelevant by comparison.
• Use disavow sparingly. Only when Google’s two-part test is met and the links cannot be removed at source. Routine disavowing of spam links Google already ignores is wasted effort and carries a small risk of disavowing links that were actually helping.

The overall posture: do not lose sleep over toxic-link attacks, which Google has largely defused, and do put lightweight monitoring in place for the vectors that still bite, chiefly DMCA abuse and hacking.

Footnotes

1. How we fought Search spam on Google in 2022 (Webspam Report) — Google Search Central ↩ ↩²

2. December 2022 link spam update releasing for Google Search — Google Search Central ↩