Every Google spam update produces the same cycle of commentary. Within hours, someone announces what it targeted, a list of “hit” sites circulates, and a theory hardens into received wisdom. Almost none of it is sourced. Google publishes the dates and the durations; it does not publish a list of what each update went after beyond its spam policies in general.
That makes the dates the most useful thing to know, and the commentary the least.
Every Google spam update in 2026 so far
The authoritative record is the Google Search Status Dashboard’s ranking incident history. These are the entries as listed there on 3 October 2026, with the core updates from the same period for context.
| Update | Started | Duration shown |
|---|---|---|
| August 2025 spam update | 26 Aug 2025 | 26 days 15 hours |
| December 2025 core update | 11 Dec 2025 | 18 days 2 hours |
| March 2026 spam update | 24 Mar 2026 | 19 hours 30 minutes |
| March 2026 core update | 27 Mar 2026 | 12 days 4 hours |
| May 2026 core update | 21 May 2026 | 11 days 21 hours |
| June 2026 spam update | 24 Jun 2026 | 2 days 1 hour |
| August 2026 spam update | 18 Aug 2026 | 2 days 16 hours |
| September 2026 spam update | 24 Sep 2026 | Not marked complete as of 3 October 2026 |
Two patterns are visible in the table itself. The 2026 spam updates are far shorter than the August 2025 one, which ran for almost four weeks; this year’s completed spam updates finished in under three days. And they are coming closer together: four started between late March and late September.
Why the overlap matters
The March 2026 spam update started on 24 March and the March core update on 27 March. A site that lost traffic that week could have been hit by either, or by both. Treating that drop as a spam problem when it was a core quality judgement, or the reverse, sends you after the wrong fix.
Short spam updates help here. When an update completes in a day or two, the drop it causes tends to start abruptly on or just after its start date. A core update rolling out over twelve days tends to produce a more gradual slide. That is a tendency, not a rule, but it is a better starting point than the forums.
How to diagnose a Google spam update drop
Work through the evidence in order, from the most certain to the least.
- Check manual actions first. Search Console’s manual actions report tells you whether a person at Google has acted on the site. If it is empty, any drop is algorithmic.
- Annotate your timeline. Mark every date from the table on your organic traffic chart. A drop that starts on a spam-update date, with no manual action, is algorithmic and probably spam-related.
- Separate it from core updates. If the drop sits inside a core update window instead, read our guide to recovering from a core update; the response is different.
- Check which pages fell. A drop concentrated on one section or one type of page tells you far more than a sitewide percentage.
The Google updates tracker lists these dates alongside each other, so you can line up your own chart against the full sequence rather than the one update you happen to remember.
What to check on your own site
Because Google does not say what each spam update targeted, the honest approach is to audit against the spam policies as a whole rather than guess at this month’s focus. Three areas cover most of what goes wrong on otherwise legitimate sites.
Links. A link spam update targets manipulative links. If you have bought links, run reciprocal schemes or built links through networks, those are the first place to look. Review the backlink profile for patterns no editor would create by choice: identical anchors, irrelevant sites, sudden spikes.
Content you did not write. Scraped, spun or lightly rewritten copies of other people’s pages are a long-standing spam concern. Compare a sample of your pages with what ranks for the same queries. If yours adds nothing, that is a risk whatever the update calendar says.
Content hosted for others. Third-party sections that exist to borrow your site’s authority are a common source of trouble, and our piece on whether parasite SEO still works covers how Google has treated them.
If a spam update hit you: what to do next
An algorithmic demotion has no reconsideration request. There is no form to fill in and nobody to appeal to. The only route back is to remove whatever pattern put the site on the wrong side of the policies and wait for Google’s systems to reassess it.
That means fixing causes, not symptoms. If the problem is links, stop building them the way you did and deal with the worst of what exists. If it is copied or hosted content, remove it or noindex it rather than rewriting it lightly and hoping. Half-measures leave the pattern in place, and with spam updates now arriving every few months, a site that has not changed is exposed again at the next one.
Keep a dated log of every change you make. When recovery comes, it rarely arrives on a schedule, and the log is the only way to connect what improved to what you did. It also stops you making overlapping changes that you later cannot untangle.
The limits of date-matching
The honest limitation is that a matching date is evidence, not proof. Sites lose traffic for many reasons, and some of them, a broken release, a lost featured snippet, a seasonal dip, can coincide with an update by chance. Date-matching tells you where to look first; it does not close the case.
There is a second gap. Algorithmic spam demotions come without a notice, so you cannot confirm one directly. The absence of a manual action rules out one cause; it does not confirm the other. That is why the page-level check matters: a drop limited to the pages that fit a spam pattern is far stronger evidence than a sitewide dip.
For the September 2026 update specifically, wait. It is not marked complete, so any movement you see now may still change. Note the start date, keep collecting data, and judge it once the dashboard shows it finished and the traffic has had time to settle. Our wider coverage of updates sits in the algorithm archive.
Frequently asked questions
When was the last Google spam update?
The September 2026 spam update started on 24 September 2026. As of 3 October 2026, Google’s Search Status Dashboard did not show it as complete, so no end date is available yet.
What does a Google link spam update target?
Manipulative links: links built or bought to influence rankings rather than earned editorially. Google does not publish detailed targets for each general spam update beyond its spam policies.
How do I know if a spam update hit my site?
Check Search Console for manual actions, then match the start of your traffic drop against spam update dates. A drop that begins on one with no manual action is algorithmic.
The takeaway Ignore the speculation and use the dates. Check manual actions, annotate your timeline against the dashboard, and audit the pages that fell against Google’s spam policies as a whole.
