Skip to main content

Poisoned SERP

Why Rank Tracker positions may swing sharply since September 2026, and how to tell a poisoned Google SERP from a real ranking drop.

Written by Mike

🟡 Status: active · updated 28.10.2026

Poisoned SERP: Why Positions May Change Sharply

Since September 2026, Google has been returning poisoned SERPs to some automated requests. A poisoned SERP looks like a normal results page, with the usual layout, ads, and SERP features. However, most of its organic results are replaced with different ones. Rank trackers rely on automated requests, so this affects every SEO platform that collects Google data, including Serpstat.

What's happening

  • No error, no CAPTCHA: The page looks complete, so it gets stored as real ranking data. Your site may seem to leave the Top 10 for a day or two, even though nothing changed.

  • The Top 10 swings most: In Serpstat data, the biggest swings affect domains in the Top 10. Positions outside the Top 10 change less.

  • Rises happen too: A poisoned SERP can push a site up as well as down.

  • The share keeps changing: The share of poisoned SERPs varies from day to day and can differ between mobile and desktop results.

  • No official comment: Google has not explained the change. The SEO industry links it to efforts against large-scale scraping, but this is an interpretation.

Signs of a Poisoned SERP

These patterns help you spot a poisoned SERP. They are signals, not proof, and they can change over time.

  • Partial match: Results answer only part of the query, often a single broad word.

  • Unusual sites on page 1: Social networks and forums, such as Reddit, Quora, Facebook, or Pinterest, replace the sites that usually rank.

  • Marketplaces on informational queries: Marketplaces rank for queries that look for information, not a product.

  • Off-topic People also search for: Suggestions in this block do not match the query.

  • Repeats and short pagination: The same domains appear several times, or pagination ends earlier than usual.

  • Ads stay the same: Ads and Shopping blocks do not change, which makes the page look intact.

  • Query type matters: Long-tail and “near me” queries are affected more often, brand queries less often.

What Serpstat is doing

  • We run additional quality checks on SERP data and flag suspicious snapshots.

  • We don't draw conclusions from a single abnormal collection. Suspicious SERPs are re-collected and rechecked.

  • Re-collection does not use your credits.

  • We keep monitoring the situation and will update the status of this article.

How to Check: 4 Steps

  1. Check Project Overview. Go to Rank Tracker → Project Overview. Look at Average position, SERP storm, the Raised, Dropped, and Lost counters, and the Positions column. If many keywords moved by dozens of positions at once, check the SERP before changing your site. Check sudden rises too.

  2. Open SERP History. Go to Rank Tracker → SERP History, pick a keyword, and choose a date range. Compare the day of the jump with several earlier dates, not just the previous day. In a genuine drop, competitors usually keep their positions.

  3. Inspect the cached SERP. Click Cached SERP above a date to open the saved copy of the Google page. Check whether the results match the full search intent and review People also search for. Cached SERPs are available for the last 4 days of updates.

  4. Check Google manually. Search for the same query in Google with the same country, language, and device. Record the date, keyword, and what you saw in Project notes.

⚠️ Important: Right now, the Actual SERP button shows the same results as the cached SERP: both come from the same automated collection. It is not an independent check. To see what users see, search Google manually.

Pro Tip: How to Interpret the Results

Compare the cached SERP with your manual Google check before you change anything on your site.

  • Genuine ranking change: The SERP is relevant both in the cache and in Google, and your positions really dropped. Analyze competitors and your content.

  • Anomalous SERP snapshot: The cache shows shifted intent, but Google looks normal. Don't change your site based on this snapshot. Compare the data after Serpstat rechecks it.

  • Persistent SERP change: The signs appear both in the cache and in Google and remain after a recheck. Review the search intent and the pages now ranking at the top.

❓ Frequently Asked Questions

Q: Does re-collection use my credits?
​A: No. Re-collecting suspicious SERP snapshots does not affect your credits.
​

Q: Is this a Serpstat-only issue?
​A: No. Every platform that collects Google data through automated requests receives poisoned SERPs, and other SEO platforms have confirmed it.
​

Q: Should I change anything on my site?
​A: Not based on a single jump. Wait for 2–3 updates and judge the trend, not individual positions.
​

Q: How can I check my own rankings?
​A: Use Google Search Console. It shows your average position for a period, not at one moment. If impressions and clicks hold steady while the tracker shows a drop, you have probably lost nothing. Search Console has no competitor data.
​

Q: How can I spot bad data faster?
​A: Track a few stable keywords, such as a brand term that usually ranks first. If they suddenly drop, the SERP data is likely poisoned.
​

Q: When will the situation stabilize?
​A: It depends on Google. We monitor the situation and will update the status in this article.
​

Next Steps

Did this answer your question?