Google’s September 2026 spam update appears to have produced a second, distinct period of ranking volatility on 30 September. The first widely reported movement came between 25 and 27 September. The most useful conclusion for website owners is not that Google has confirmed a “phase two”, because it has not. The pattern reinforces a practical rule for active algorithm rollouts: assess performance over the full rollout window, not a single day or a single tracker chart.

Google confirmed that the update began on 24 September 2026, applies globally and across all languages, and may take up to two weeks to complete. Google Search Status Dashboard

Volatility is Evidence, Not a Diagnosis

The 30 September movement is best treated as a signal to investigate, not a verdict on a website. Search Engine Roundtable reported that volatility appeared to return on 30 September after the earlier 25–27 September wave. Its description of this as a “second wave” or “phase two” is an interpretation of tracker data and site-owner reports. It is not a Google-confirmed deployment stage. Search Engine Roundtable’s report

This distinction matters. A traffic or ranking drop can occur during a spam-update rollout without proving that Google classified a site as spam. Google’s own troubleshooting guidance asks site owners to consider technical issues, indexing, security problems, manual actions and changing search demand as part of a proper diagnosis. Google’s traffic-drop troubleshooting guide

What the new reports show

On 1 October, Search Engine Roundtable reported that the initial movement ran from 25 to 27 September. It said renewed volatility became visible on 30 September and into 1 October. Read the report

SEO consultant Glenn Gabe said several site owners had contacted him after seeing substantial declines beginning on 30 September. He said this included sites that had not been affected in the earlier period. This is a meaningful industry observation, but it is anecdotal evidence. It is not a Google-issued measure of how many websites or queries were affected. Glenn Gabe’s update

Reports also mentioned highly variable Discover and News traffic. Treat these accounts carefully. Forum reports can identify a pattern worth watching, but they cannot establish a confirmed Google-wide change to Discover or News. Search Engine Roundtable’s report

This graphic is a qualitative editorial summary of industry reports. It is not Google data, a count of affected websites, or an official severity score.

What this does not prove

It would be inaccurate to say that Google has launched a blanket penalty against AI-generated content, translated content, programmatic SEO, affiliate websites or any named platform. Google’s announcement identifies the release, scope, and intended rollout period, but it doesn’t name a single target.

The reports about Reddit’s AI-translated pages returning in some markets are also observations, not evidence of a new Google policy. Google’s existing documentation focuses on policy compliance and user value. It warns against scaled content created primarily to manipulate rankings, whatever method was used to produce it. Google’s spam policies

What Site Owners Should Do Now

The right response is controlled analysis, not rushed rewriting, mass deindexing or link removals. During the rollout, check the following in Google Search Console:

• Compare 30 September onward with a comparable earlier period, then separate results by page, query, country, device and search appearance.
• Check whether the decline is isolated to a group of landing pages, a country, Discover, News or standard web results.
• Review the Page Indexing, Security Issues and Manual Actions reports before attributing a change to the spam update.
• Assess pages that are near-duplicate, thin, heavily templated or built around search terms without a distinct user purpose.
• Keep a record of changes and avoid making several major technical and content changes at once, because that makes later diagnosis harder.

Google says sites that see changes after a spam update should review its spam policies. It also cautions that, where improvements are needed, its automated systems can take months to recognise them. Google’s spam update guidance

Current position

As of 1 October 2026, Google’s September spam update is still rolling out. The 30 September movement is a credible signal of renewed volatility, but “phase two” is industry shorthand, not an official Google designation. Website owners should keep monitoring performance and wait for the rollout to finish before making final impact assessments.