Google Just Dropped a Spam Update and a Core Update in the Same Week. Here Is What I Am Seeing.

Two updates in one week. Here is what is happening.

Google just dropped a spam update on March 24 and followed it with a core update on March 27. Two algorithm changes in the same week. If your rankings are moving right now, this is why.

I have been through dozens of these updates over the past decade. Some of them reshuffled everything. Some of them were barely noticeable. This spam update was one of the fastest I have ever seen, and that tells us something important about where Google is heading.

The March 2026 spam update: what happened

Google started rolling out the March 2026 spam update on March 24 at 3:20 PM. It finished in under 20 hours. That is the fastest confirmed spam update in Google's dashboard history.

For context, the March 2024 spam update took 14 days. The October 2024 spam update took 8 days. This one was done before most SEOs had finished their morning coffee the next day.

Here is what we know:

• It applies to all languages and all locations globally
• Google did not announce any new spam policy categories
• Google did not publish a companion blog post explaining what was targeted
• The existing spam policies remain the framework: scaled content abuse, expired domain abuse, site reputation abuse, cloaking, doorways, and the rest
• Google advised affected sites to review their spam policies and ensure compliance

Why the speed matters

A 20-hour rollout means one of two things. Either the scope was narrow (targeting a specific, well-defined type of spam) or Google's SpamBrain system has gotten significantly faster at identifying and demoting spam signals at scale.

I think it is the second. Google has been investing heavily in their AI-based spam detection. SpamBrain is not a manual review system. It is machine learning that identifies patterns across billions of pages. A faster rollout suggests the system needed less time to evaluate and apply its decisions.

As Search Engine Journal noted, the muted reaction from the SEO community might actually be the most significant signal. Historically, spam updates that feel quiet often precede larger algorithmic changes. Google clears the spam before serving the main course.

The March 2026 core update: what we know so far

Three days after the spam update finished, Google announced the March 2026 core update on March 27. This is the first major core update of 2026 and it is rolling out now. Google says it will take up to 2 weeks to complete.

What Google has said:

• It aims to "better surface relevant, satisfying content for searchers from all types of sites"
• It introduces "broad changes to Google's ranking systems and algorithms"
• No new specific guidance was provided
• The standard recommendation applies: focus on creating helpful, people-first content

This is the first core update since December 2025, which is a 3-month gap. That is not unusual, but combined with the spam update landing just 3 days earlier, it suggests Google is executing a coordinated one-two punch: clean up spam first, then recalibrate quality rankings.

What this means for your website

Based on what I have seen across client sites in the past 48 hours, here is my read:

If your rankings dropped after March 24 (spam update):

Check your site against Google's spam policies. The most common issues I see:

• Scaled content abuse. If you published a large volume of AI-generated pages without genuine editorial oversight, this is the first place to look. Google's updated guidance on AI content is clear: volume without value is spam.
• Link schemes. Buying links, participating in link exchanges, or using PBNs. Google's SpamBrain has gotten very good at detecting these patterns.
• Thin or duplicated content at scale. Programmatic SEO pages that do not provide unique value per page.
• Expired domain abuse. Buying old domains and repurposing them to ride on historical authority.

If your rankings are fluctuating now (core update in progress):

Do not panic. Core updates take up to 2 weeks to complete. Rankings will bounce around during the rollout. Here is what to do:

1. Document your current positions. Take a snapshot now so you can measure the before and after once the update finishes.
2. Do not make reactive changes. Do not start deleting pages, changing titles, or disavowing links based on mid-rollout fluctuations. Wait for the dust to settle.
3. Review your content quality honestly. Read Google's helpful content documentation and ask yourself: does my content genuinely help the person who searched for it?
4. Check your E-E-A-T signals. Author bios, credentials, citations, review processes. These matter more with every update.
5. Monitor Google Search Console. Watch for coverage issues, indexing changes, or manual actions.

If your rankings are stable:

Good. Keep doing what you are doing. But do not get complacent. Core updates can have delayed effects, and what looks stable on day 2 might shift by day 10.

The pattern I am seeing across my clients

Across the sites I manage, here is what I have observed so far:

Sites that gained or held: These are the ones with genuine topical authority, consistent content publishing, natural link profiles, and strong E-E-A-T signals. No shortcuts, no tricks, just solid fundamentals executed over months.

Sites that dropped: I have seen drops on sites that had thin content at scale, aggressive link building from irrelevant sources, or pages that existed to rank rather than to help. These are the exact patterns Google has been targeting since the helpful content update was folded into core in March 2024.

Sites in YMYL niches are seeing more volatility than usual, which is consistent with every major core update. If your site covers health, finance, or legal topics, expect more movement and make sure your expertise signals are airtight.

My honest take

Here is what I tell every client during an update:

If you have been doing SEO the right way, building genuine authority, creating content that actually helps people, earning links through quality rather than transactions, these updates are your friend. Every core update that rewards quality and punishes shortcuts widens the gap between you and competitors who took the easy road.

If you have been cutting corners, using AI to mass-produce content without review, buying links, building thin pages at scale, this update (and every future one) is a warning. The window for those tactics is closing faster than most people realise.

Google is not getting worse at detecting spam. SpamBrain is getting faster. A 20-hour spam update rollout in 2026 versus a 14-day rollout in 2024 tells the story. The detection is becoming real-time.

The only sustainable SEO strategy is the one Google keeps telling us about: be genuinely useful. Everything else is borrowed time.

What to do right now

1. Monitor, do not react. Track your rankings daily for the next 2 weeks but do not make changes until the core update finishes rolling out.
2. Audit your content. Are there pages on your site that exist to rank rather than to help? Consider removing or improving them.
3. Check your link profile. Any links that look unnatural? Disavow them now before the next update.
4. Strengthen E-E-A-T. Add author bios, update credentials, cite authoritative sources, show last-updated dates.
5. Read Google's guidance. Not an SEO blog's interpretation of it. The actual documentation. It is clear, practical, and free.

I will update this post as the core update finishes rolling out and we see the final impact. Stay calm and focus on quality.

Sources

• Google releases March 2026 spam update (Search Engine Land)
• Google March 2026 spam update done rolling out (Search Engine Land)
• Google's March spam update felt muted but may signal bigger changes (Search Engine Journal)
• Google March 2026 core update rolling out now (Search Engine Land)
• Google begins rolling out March 2026 spam update (Search Engine Journal)
• Google spam policies (Google Search Central)
• Creating helpful, reliable, people-first content (Google Search Central)