Google rolled out the September 2026 Spam Update from September 24 to October 8, 2026. The update took two weeks, making it longer than earlier spam updates, which lasted less than three days.

Google’s Official Announcement
Google announced the September 2026 Spam Update on its X (formerly Twitter) and LinkedIn pages.
Today we released the September 2026 spam update. We'll update our ranking release history page when the rollout is complete: https://t.co/gaZTPxc9tA
— Google Search Central (@googlesearchc) September 24, 2026
What Are People Saying?
Creators reacted negatively to the September 2026 Spam Update over concerns that it would take away their traffic.
In a response to Google’s announcement, X user Xival said Google updates destroyed good sites. They also shared a report showing their clicks and impressions dropped sharply during the August 2026 Spam Update, which ran from August 18 to 21, 2026.
You just kill good websites pic.twitter.com/gneD9qV2NV
— Xival (@anime_h15788) September 25, 2026
On September 25, 2026, early in the rollout, Glenn Gabe suggested that Google was releasing back-to-back spam updates because users were gaming Google’s AI Overviews. He added that sites previously hit by the August 2026 Spam Update lost more traffic in the September 2026 Spam Update.
Good Morning Google Land! This is the 9/25 edition of "Spam Update Notes". As announced yesterday, Google rolled out yet another spam update following the powerful August spam update and spam updates in March and June. Like I've been saying, many companies are gaming AI search… pic.twitter.com/jl8b755qzJ
— Glenn Gabe (@glenngabe) September 25, 2026
On September 28, 2026, Glenn Gabe shared additional reports indicating that more sites were being impacted by the September 2026 Spam Updates. Many of these sites had lost traffic to previous spam updates and were losing more to this one too.
Google Morning Google Land! This is the 9/28 edition of "Spam Update Notes". I shared on Friday about the update starting to show itself, but this weekend it *really* showed itself. I'm seeing big drops across a number of sites. And that's across verticals and countries (which… pic.twitter.com/WW5Q7fAX1a
— Glenn Gabe (@glenngabe) September 28, 2026
On October 1, 2026, Glenn Gabe reported that several site owners saw big traffic drops on September 30, 2026. He speculated that the update rolled out in multiple stages, which likely accounted for the staggered losses he recorded.
Good morning Google Land! This is the 10/1 edition of "Spam Update Notes". The update continues to roll out and I believe we saw a specific change on 9/30. I received emails from several site owners explaining they saw a huge drop right on 9/30… The update could take up to two… pic.twitter.com/Aw8ZqsyV5F
— Glenn Gabe (@glenngabe) October 1, 2026
Barry Schwartz also posted about the September 30, 2026 spike and referred to it as the second wave of the September 2026 Spam Update.
Google September spam update hits again on September 30th – this may be the second wave – more from @glenngabehttps://t.co/d82m7Cf4XH
— Barry Schwartz (@rustybrick) October 1, 2026
On October 2, 2026, Barry Schwartz reported that Google had updated its AI content guidance to say publishers should manually fact-check and review AI-generated content for accuracy and trustworthiness before publishing.
Google updates the AI content guidelines to say you should "manually factcheck and review all AI-generated content for accuracy and trustworthiness before publishing"https://t.co/F0KgV2XO31
— Barry Schwartz (@rustybrick) October 2, 2026
Previous Spam Updates
The September 2026 Spam Update is Google’s fourth spam update of 2026 and the third in a row, with no core or link spam updates in between. Unlike the previous two, which lasted two and three days, this one is expected to run for up to two weeks.
Here are the other spam updates we’ve documented over the past few years.
- August 2026 Spam Update: August 18 – August 21, 2026
- June 2026 Spam Update: June 24 – June 26, 2026
- March 2026 Spam Update: March 24 – March 25, 2026
- August 2025 Spam Update: August 26 – September 22, 2025
- December 2024 Spam Update: December 19 – December 26, 2024
- June 2024 Spam Update: June 20 – June 27, 2024
- March 2024 Spam Update: March 5 – March 20, 2024
- October 2023 Spam Update: October 4 – October 20, 2023
- December 2022 Link Spam Update: December 14, 2022 – January 12, 2023
- October 2022 Spam Update: October 19 – October 21, 2022
- November 2021 Anti-Spam Update: November 3 – November 11, 2021
- Link Spam Update: July 26 – August 24, 2021
- Anti-Spam Update II: June 29, 2021
- Anti-Spam Update: June 23, 2021
What’s Next – Dealing with This Update
The September 2026 Spam Update was as impactful as expected, with some even comparing it to a core update. Many sites saw volatility within a day of the rollout.
Some also suggested that the update rolled out in stages, indicating it may have been multiple spam updates combined into one. While speculative, this wouldn’t be unusual given that it lasted two weeks, compared with two or three days for previous spam updates.
That said, you should monitor your site with Rank Math Analytics. If you lost traffic, review your site and content to make sure they comply with Google Search Essentials spam policies.