Google Expands Use of AI to Catch AI-Generated Spam

Google says it is relying more heavily on AI to filter search spam. The comments came out of a three-day Search Central Live Deep Dive event Google held in Europe, and attendee John Campbell's notes were reported by Search Engine Roundtable on October 5. Because this is a secondhand account of event remarks, it carries a different weight than an official Google announcement.

According to Campbell's notes, Google staff emphasized that AI now plays a bigger role in spam filtering. In particular, the trend of using AI detection tools against AI-generated, mass-produced low-quality content was described as increasingly visible.

Google's Gary Illyes reportedly repeated a figure at the event: roughly 40 billion spam pages filtered per day. That number isn't new, Search Engine Roundtable noted; Google has cited it before, and it simply came up again at this event.

Campbell's notes also described Illyes as pointing to scaled, low-effort content as a growing risk going forward. As AI tools make it easier to mass-produce articles, low-quality content can pile up far faster than it used to.

The event also reportedly touched on several reasons Google adjusts its quality judgments over time. Since this detail passed through Campbell's secondhand summary, though, it's premature to treat each specific reason as Google's official stated position.

This account comes from a Google employee's remarks at a public event, relayed through an attendee's notes, not a Google blog post or other official channel. Even so, it drew industry attention for hinting at internal thinking that doesn't usually get discussed in public.

In Korea

As AI-driven mass content production grows in Korea too, prioritizing volume over depth looks like a riskier bet over time. One well-researched piece can be a safer choice than churning out several shallow ones on the same topic.

Source: Search Engine Roundtable, October 5, 2026. Checked October 8, 2026. Read the original