Parasite SEO is the practice of placing content on someone else's trusted domain so it ranks on that domain's reputation instead of its own merit. Think coupon sections on news sites, or loan comparisons tucked into a lifestyle magazine by an outside partner. Google tackles it through its site reputation policy, and on August 28, 2026 it announced a change to how that policy is enforced in Europe.
Under the update, published on the Google Search Central Blog, a manual action now works differently depending on where the searcher is. From August 30, searchers outside the European Economic Area (EEA) see the affected section demoted. Searchers inside the EEA do not, but that section may gradually be separated from the rest of the site. The Netherlands is in the EEA, so for Dutch publishers and brands this matters more than the headline suggests.
The news is only the trigger. The question that matters for every site owner is what third-party, sponsored and partner content lives on your domain, and whether it would hold up if a reviewer asked why it is there.
What parasite SEO is, and what Google's policy targets
Google introduced its site reputation policy in 2024 "to stop a practice where third-party content is published on a trusted website just to exploit that site's good reputation to rank higher in Search." According to Google, the practice hurts search quality and creates a bad experience for users.
Two parts of that definition do the heavy lifting: the content comes from a third party, and it sits on your domain mainly to rank. A guest column from an expert your readers actually want does not fit. Payday loan comparisons on a recipe site, written and monetised by an outside company, fit perfectly. Most real cases sit somewhere in between.
Google also says it is clarifying the criteria it considers when applying the policy. The announcement does not list them, so check Google's own policy documentation before you decide on specific sections.
What changed on August 30
Google is adjusting its enforcement approach within the EEA following discussion with the European Commission. The change concerns manual actions applied under the site reputation policy.
Outside the EEA: the familiar demotion
For users outside the EEA, a site reputation manual action directly affects search results for the portion of the site that is affected. As before, the rest of the site is not affected. A coupon folder can lose its visibility while the newsroom around it keeps ranking.
Inside the EEA: no direct impact, but a slow separation
For users inside the EEA, the impact of the manual action does not apply. That sounds like a loophole until you read the next sentence of the announcement:
The affected section of the site may be separated in our systems so that, over time, it ranks independently from the rest of the site.
Google Search Quality team, Google Search Central Blog
Ranking independently is exactly what parasite content is built to avoid, because the whole point is borrowing the host's reputation. Google says "may" and "over time". Our reading: expect a gradual slide, not an overnight drop or a clean before-and-after chart.
Notifications, reconsideration and mediation
Site owners will still be notified in Search Console when a manual action is applied. If you believe an action was taken in error, you can submit a reconsideration request, after which eligible sites can also bring disputes to mediation. The announcement does not say which sites are eligible, so confirm that before you plan around it.
Why the EEA split matters for Dutch publishers and brands
For a Dutch site with a mostly Dutch audience, a site reputation manual action will rarely show up as a sharp traffic drop, because most of your searchers will not see the demotion. That is exactly why reading the rule as "Europe gets a pass" is risky.
- A manual action can still land on your pages. Google notes that because many pages are viewed globally, any page might get a manual action that only affects results for users outside the EEA.
- Visitors from outside the EEA feel it directly. English-language content, expat audiences and cross-border shops often earn part of their clicks there.
- Inside the EEA, the section may be separated over time, and a slow decline is easy to blame on something else.
So watch the Manual actions report in Search Console, not just your traffic graphs, and compare performance by country for sections that host third-party content. If clicks from outside the EEA fall while Dutch clicks hold, look closer. Serving several markets? Make this part of your international SEO setup, because the same URL can now behave differently depending on where the searcher is.
How to run a parasite SEO audit on your own domain
Most site reputation problems come from a commercial deal, not an editorial scheme: a coupon partner, a white-label review section, a sponsored programme that grew faster than anyone checked. A parasite SEO audit maps all of it and asks every part the same questions.
- 1Inventory every section with outside involvement: subfolders, subdomains and content types where a third party writes, supplies or earns from the content, from sponsored posts and coupon sections to affiliate reviews and anything "powered by" another company.
- 2Map the money and the control. Note who writes each section, who approves it, who earns from it and what the contract says. A section your own team has no say over deserves extra scrutiny.
- 3Check topical fit. Does the section match what your site is known for and what your readers come for? A health publisher hosting crypto reviews is an obvious mismatch; most cases are subtler.
- 4Read the queries. Filter the Search Console Performance report by folder. If a section mostly wins searches unrelated to your core topic, act on it.
- 5Ask whether it would exist without search. If organic traffic disappeared tomorrow, would this content still be worth publishing for your audience? If not, it exists to rank.
- 6Check the Manual actions report for every property, including subdomains.
What brands buying placements should check
Parasite SEO has two sides. If your brand pays for sponsored articles or review placements on large publisher sites, your visibility depends on how that host is treated. Outside the EEA, a manual action on the host's section takes your placement down with it; inside the EEA, that section may lose the host's reputation over time. Choose placements that fit the host's audience and editorial line, and judge any link building partner on relevance before domain metrics.
What to do with sections that fail the test
Keep and integrate
Content that serves your audience and fits your topic can stay. Bring it under real editorial control, label sponsored work clearly, mark paid links with rel="sponsored", and make it part of your content strategy instead of a side project a partner runs alone.
Noindex or move it
Content with commercial value but no business ranking on your domain can be kept out of the index with noindex, or moved to a separate domain where it has to earn its own rankings.
Remove it
Thin, off-topic sections that only exist for the traffic are rarely worth saving. Remove them, redirect where a sensible equivalent exists, and let the rest return a 404 or 410.
If you already have a manual action
Start in Search Console, where Google notifies you and shows what was flagged. Fix the issue across the whole section, not only the sample URLs, and document every change. Then submit a reconsideration request that explains what you changed and how you will keep it from coming back, or why you believe the action was a mistake. Where your site is eligible, mediation can follow.
Frequently asked questions
What is parasite SEO?
Parasite SEO is publishing content on a trusted third-party domain so it ranks on that domain's reputation instead of its own. Google has had a site reputation policy against it since 2024.
Does the update make parasite SEO safe in the EEA?
No. Since August 30, a site reputation manual action no longer directly affects results for searchers inside the EEA, but the affected section may be separated so it ranks independently over time. Outside the EEA, the same page can still be demoted.
Is all sponsored or third-party content site reputation abuse?
No. The policy targets third-party content placed on a trusted site to exploit its reputation to rank. Sponsored or partner content that fits your audience and topic is a normal part of publishing. The risk sits in sections that exist mainly because your domain helps them rank.
How do I know if my site has a site reputation manual action?
Google notifies site owners in Search Console when a manual action is applied. Check the Manual actions report for every property, and compare performance by country, because Dutch and other EEA traffic may not show the impact.
Get an outside view of what your domain hosts
Site reputation problems rarely start with bad intent. They start with a partnership nobody revisited. If your domain hosts sponsored, partner or affiliate content, or your brand relies on placements on other people's sites, know where you stand before a reviewer decides for you. LASEO reviews every third-party section as part of an SEO audit, so you know what to keep, what to noindex and what to remove.