Google’s September 2026 spam update finished rolling out on 8 October 2026 after 13 days, and SEOs are reporting a sharp rise in manual action penalties aimed at thin and mass-produced content. If your site has a blog full of quickly generated posts, that is the part of your site most at risk right now.
What exactly did Google change?
Google ran a routine spam update for two full weeks and told almost nobody what it targeted.
According to Google’s Search Status Dashboard, the September 2026 spam update started on 24 September 2026 at 9:15 a.m. Pacific and was marked complete on 8 October 2026 at 1:37 a.m. Pacific — a run of 13 days and roughly 16 hours, as logged by PPC Land. Google described it on LinkedIn and Search Central as "a normal spam update" that "will roll out for all languages and locations."
Two things Google did say are worth holding onto. It confirmed no policy changes accompanied the release, and it said link spam was not the target.
The length is the unusual part. Search Engine Roundtable notes recent spam updates wrapped in about two days, and Google engineer Gary Illyes has shown internal data putting typical rollouts at one to two days. This was the longest since August 2025.
Why are so many sites suddenly getting manual penalties?
Because a human reviewer, not just an algorithm, appears to be looking at mass-produced blog content — and the volume of those reviews has gone up.
This part is anecdotal and Google has not commented, so treat it as a pattern rather than a fact. Marie Haynes wrote on X on 7 October 2026 that she had seen "a big increase in requests for help with manual actions lately," telling Search Engine Roundtable the volume had gone from essentially none to several a week. Most affected sites, she said, were hit for thin content, pure spam or scaled content.
Consultant Daniel Foley Carter put the rise down to SEO shortcuts and scaled content abuse, and said some sites lost 90% or more of their traffic overnight.
Barry Schwartz of Search Engine Roundtable reviewed twelve recent Google Webmaster Help Forum threads. Three reported a "major spam problems" action scoped specifically to the site’s /blog/ directory. One site owner removed 4,000 URLs and still had a thin content action against them.
A manual action scoped to /blog/ means the reviewer decided the blog was the problem and the rest of the site was fine. For a service business, that is usually a blog bolted on for "SEO reasons" and filled fast.
Is Google now using AI to find AI content?
Google says it is using AI to catch more spam; it has not said the target is AI-written content specifically.
At a Search Central Live Deep Dive in Barcelona, Google’s search team said "the team is now using AI to help catch more of it," according to a recap by John Campbell of We Are Roast, reported by Search Engine Roundtable on 5 October 2026. Google also said there have been more spam updates recently "because there is so much more new content."
In the same recap, Illyes reportedly warned that scaled content is becoming a bigger problem than link spam. Google’s own How Search Works page puts the scale of the job at 40 billion spam pages filtered a day.
Read that carefully. Google is not penalising a page for being written with AI. It is penalising pages that exist in bulk and say nothing. Those two things overlap heavily in practice, which is why owners keep hearing the first version of the story.
Which pages on my site are actually at risk?
The risk sits with pages produced at volume to catch keywords, not with pages produced to answer a customer.
| Lower risk | Higher risk |
|---|---|
| One service page per service you actually sell | Near-identical pages for 60 nearby towns |
| A post answering a question customers phone you about | A post built around a keyword nobody asked you |
| Real prices, real timelines, real photos of your work | Generic advice available on 400 other sites |
| A handful of pages, updated when things change | Dozens of posts published in one week, never touched again |
| Named author who did the work | Invented author bio and stock headshot |
Not sure which side a page falls on? Ask whether you would send it to a customer who asked you that question.
What to do this week
- Check Search Console for a manual action. Open Search Console, go to Security & Manual Actions, then Manual Actions. If it says "No issues detected," you have not been penalised by a reviewer — any traffic change is algorithmic and handled differently.
- Pull your worst 20 blog posts. Sort your pages by clicks over the last three months. Anything with near-zero clicks and no sales purpose is a candidate to improve, merge or delete. Removing filler is a legitimate fix, not a trick.
- Fix the author problem. If your posts carry an invented author, replace it with the real person — you, your technician, your office manager. Fake authors came up repeatedly in this cycle’s coverage.
- Stop the publishing treadmill. If someone is producing four posts a week for your site, cut it to one that is genuinely yours. Volume is the risk factor here.
If you would rather have someone audit it properly, that is the work our SEO service does first on every account: find the pages dragging the domain down before adding anything new.
Frequently asked questions
Will deleting blog posts hurt my rankings?
Usually not, if you are deleting pages that get no clicks and serve no purpose. Google has said for years that removing genuinely unhelpful content can help a site overall. The caution is to check each page’s traffic and conversions before you remove it — a page with modest traffic that brings in enquiries is not filler. Redirect anything you delete to the closest relevant page rather than leaving a dead URL.
How long does it take to recover from a Google spam update?
Algorithmic recovery typically waits for a later update or refresh, which Google said it will run periodically — so months, not days. A manual action is different: you fix the problem, file a reconsideration request in Search Console, and a reviewer looks again. Reported timelines for that review vary from a couple of weeks upward, and there is no guarantee attached.
Does this spam update apply to Canadian businesses?
Yes. Google stated the September 2026 spam update "applies globally and to all languages," so a Toronto plumber and a Vancouver optician are covered on the same terms as anyone else. The commentary and manual-action reports quoted here are global rather than Canada-specific, as no Canadian breakdown has been published.
Can I still use AI to write blog posts?
Google’s stated position is that it rewards helpful content regardless of how it was produced, and nothing in this update changed that. What it is acting on is scale without substance. Using AI to draft a post you then correct with your own pricing, process and photos is a different thing from publishing thirty generated posts a month. The second one is what is drawing penalties.
Want a second opinion on whether your blog is helping or hurting? We will run a free 48-hour audit and tell you straight.
Sources: PPC Land, "Google’s September spam update ends after 13 days as manual actions rise"; Search Engine Roundtable, "Google September 2026 Spam Update Is Done Rolling Out"; Search Engine Roundtable, "Google Search Spam Updates Use AI To Find AI Spam", 5 October 2026; Search Engine Roundtable Daily Recap, 9 October 2026.