The Google September 2026 spam update finished rolling out this week. SEO tools traced the third and final phase to October 4 through 6.

What did the final update change?

Ranking trackers logged continued volatility across the week. Sites hit in earlier phases report limited recovery so far.

Google hasn't announced a successor update. Watch the next two weeks for confirmation of a follow-up.

Why are manual penalties rising?

Google's spam team sent a higher volume of manual action notices in October. Several SEO practitioners reported the spike this week.

Manual actions target cloaking, hacked content, and link spam. Cleanup often takes weeks, not days.

A rising penalty count usually signals a fresh spam focus. Sites should audit thin and AI-only pages now.

How should publishers handle AI content?

Google told publishers to factcheck AI text before publishing. The guidance arrived in a refreshed quality rater document.

The document adds new sections on main content and on trust signals. Raters now score AI-only pages more harshly, which matters for any site leaning on automated drafts.

The document rates as guidance for human quality raters. It shapes the core updates that follow but doesn't replace them.

What changed for authorship?

Google warned against deceptive authorship signals. The warning covers fake bylines and stock-photo author photos.

The line between ghostwriting and deception matters here. Trust signals weigh heavily on YMYL queries across health, finance, and law.

Real names and verifiable expertise still pass. Anything that looks staged is now a clear spam risk.

How is Google using AI to fight AI spam?

Google confirmed its spam systems now use machine learning to flag AI-generated pages built only to rank.

Among the new signals: language patterns typical of bulk generation. The systems also weigh originality checks against the wider web.

AI versus AI is the new spam arms race. Expect more manual review layers through the holiday push.

What did Google say about crawling?

A new Google Search Central document breaks down average crawl, index, and serve timelines by site size.

Smaller sites index in hours, larger sites wait days based on server health, sitemap quality, and inbound links.

Publishers get one new lever: the retry-after HTTP header. Crawlers back off when servers return it.

Publishers now manage crawl budgets in part. Sites with overload issues can throttle Google directly without manual appeals.

What moved in Search Console?

Search Console added multi-select country filters in the Performance report. The AI controls panel now shows top-level domain breakdowns.

Multi-select is a long-requested fix. SEOs should spot cross-region traffic patterns faster across international sites.

Which verticals lost features this week?

Google dropped review snippets for healthcare pages. Health queries no longer show star aggregates in results.

Star snippets helped health sites attract clicks. Expect stricter manual review of health content through year-end.

What else shipped this week?

Nano Banana 2.1 now appears in Google AI Mode in Search. Search profiles launched in India and Canada, with Brazil next.

Search profiles push Google deeper into personalization. Expect more localized surfaces and signals tied to logged-in users over time.

Google local panels are testing a WhatsApp button. Small businesses can route chat from the map pack directly to messaging.

Local just got a real-time channel. Service businesses with phone-heavy flows stand to gain the most.

What's new on the ads side?

Google Ads added four AI Max columns: brand inclusion, commission, location of interest, and optimized targeting. Self-service conversion lift measurement shipped. Automated promotions for Search and PMax campaigns roll out next.

A new AI campaign localization tool, now in beta, lets advertisers translate copy and creative across markets with one click.

Ads automation is reaching every surface. Advertisers should expect fewer manual knobs by year-end.

What's moving at OpenAI?

OpenAI is testing product labels inside answers. Visual ad formats during image generation are also in testing.

OpenAI just entered ad testing at scale. Watch for product labels in answers through Q4 as a signal of where ChatGPT monetization is heading.

The week closed on a personal note. Search Engine Roundtable's Barry Schwartz published his 50,000th story on search this week.