Can Chrome-Based Spammers Impact Core Web Vitals? - Search Engine Journal

Is it possible that Chrome-based spam traffic can have a negative impact on Core Web Vitals?

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Google’s John Mueller answered whether Chrome-based spam traffic could negatively impact core web vitals scores. John Mueller isn’t on the Chrome or web platform team, so he had to pause a moment to think about that a second before answering.

One of the implications, an underlying question, is if it’s possible to launch a negative SEO attack focused on poisoning Core Web Vitals and thereby affect a known ranking factor.

Chrome User Experience Report

The Core Web Vitals scores that become ranking factors are derived from real users on Chrome browsers.

The browsing information contains the actual web page download data from real devices visiting actual web pages.

This data is what Google calls “field data” and it’s what is used to calculate the Core Web Vitals score that is subsequently used as ranking factors.

Google uses the browsing data from Chrome browser users to create the Chrome User Experience report.

Google’s developer pages describe the process like this:

“The Chrome User Experience Report is powered by real user measurement of key user experience metrics across the public web, aggregated from users who have opted-in to syncing their browsing history,...

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