Google September 2026 Spam Update: What Changed and What to Check

Google released the September 2026 spam update on 24 September and finished rolling it out on 7 October (US Pacific time). It took 13 days and 16 hours, far longer than the earlier spam updates this year.

If your traffic moved between those dates, this guide explains what Google has confirmed, what it hasn’t, how to tell whether the update hit you, and what to do next.

Key facts at a glance

All dates come from Google’s Search Status Dashboard ranking history, which is the only place to rely on for official update timing.

How it compares with other 2026 updates

Four spam updates in one year is a clear signal. Google is updating its spam detection often, and the September rollout ran about five times longer than the August one.

Google didn’t explain the longer rollout. Treat any claim about the reason as speculation, including claims you’ll see that it “targeted” one specific tactic.

What is a Google spam update?

Google runs automated spam detection all the time. A spam update is a notable improvement to those systems, including SpamBrain, its AI-based spam prevention system.

According to Google’s page on spam updates, sites that break its spam policies may rank lower or drop out of results entirely.

A spam update is not the same as a core update. Core updates reassess overall content quality and relevance, while spam updates target sites that break specific spam policies.

How to tell if the update affected your site

1. Check the dates. In Search Console, open Performance and compare 24 September to 7 October with the weeks before. A drop that starts inside that window is worth investigating.
2. Look for a pattern. Note which pages and queries lost clicks. A site-wide drop points to a different cause than a few pages slipping.
3. Check Manual actions. Spam updates are algorithmic, but it’s worth confirming you have no manual action in the Security & Manual Actions report.
4. Rule out other causes. Seasonality, tracking changes, site migrations and technical errors can all look like an update hit.

Small day-to-day movement during a rollout is normal. Judge the impact a week or two after completion, not while the update is still running.

The link spam angle

Google hasn’t said this update targeted links. Even so, link schemes remain one of the most common reasons sites lose visibility after spam updates, so your backlink profile deserves a check.

Google’s spam update guidance makes an important point about links. When spammy links are neutralised, any ranking benefit they gave is lost and can’t be won back by changing your site.

Review your profile for these warning signs:

• Paid links that pass ranking credit without a sponsored or nofollow attribute (see Google’s guidance on qualifying outbound links).
• Large numbers of guest posts on unrelated “write for us” sites.
• Repeated exact-match commercial anchor text.
• Links from networks of sites that exist mainly to sell links.

New to this? Our guide to what backlinks are and what makes a good one explains the difference between safe and risky links.

Back button hijacking: the newest spam policy

In April 2026 Google added back button hijacking to its spam policies. It covers sites that interfere with the browser’s back button, for example by sending users to pages they never visited or showing unwanted ads.

Enforcement began on 15 June 2026, after a two-month grace period. Sites that break it can face manual actions or automated demotion.

If you use aggressive ad scripts, exit pop-ups or redirect tools, test your back button behaviour on mobile and desktop now.

What to do if your rankings dropped

1. Don’t panic or make sweeping changes. Confirm the cause first, using the checks above.

2. Fix genuine policy problems. Remove or qualify paid links, stop manipulative link building, and fix any spammy on-site behaviour.

3. Strengthen what Google rewards. Focus on helpful, people-first content and earn editorial links from relevant publications through digital PR and genuine guest posting.

4. Be patient. Google says its systems need to “learn over a period of months that the site complies”, so recovery is rarely quick.

5. Request reconsideration only for manual actions. Algorithmic changes don’t use reconsideration requests.

How to stay safe in future spam updates

• Earn links from relevant sites with real readers, not bulk packages.
• Label paid placements and use sponsored or nofollow where links are paid.
• Keep anchor text natural and varied.
• Audit your backlinks monthly with Search Console and a tool from our best link building tools list.
• Ask any agency the questions in our link building agency checklist before you hire.

Frequently asked questions

When did the September 2026 spam update finish?

It completed on 7 October 2026 (US Pacific time), after starting on 24 September.

What did the September 2026 spam update target?

Google didn’t say. It called it a normal spam update that applies globally and in all languages.

Was there a Google update in October 2026?

As of 20 October, Google’s status dashboard showed no confirmed October update. The most recent core update was May 2026.

How long does recovery from a spam update take?

Usually months. Google’s systems need time to see that a site now follows its policies.

Need a second opinion on your links?

Spam updates reward one thing over time: links and content that would exist even if search engines didn’t. That’s the standard behind good off-page SEO and the way Linkuild places clients on real publications.

If you’re unsure whether your backlink profile is safe, contact Linkuild and we’ll take a look.