'As threats evolve, Gemini keeps our defenses one step ahead': Google claims its AI helped it block over 8.3 billion malicious ads in 2025

Google says Gemini blocked 99% of malicious ads in 2025AI tools removed 8.3 billion ads, suspended 24.9 million accounts, including millions tied to scamsGemini analyzes billions of signals to preemptively stop deceptive GenAI‑crafted ads

Google has revealed its Gemini AI platform has helped the company filter out almost all malicious ads submitted to the Google Ads network in 2025.

In a new blog post, Google said its Gemini-powered tools “dramatically improved” its ability to detect and stop bad ads, catching more than 99% of policy-violating ads before they were ever served.

“We’re continuing to evolve our defenses to stay ahead of even the most advanced schemes,” Google said.

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Billions of signals

Being arguably the biggest advertising network on the planet, Google Ads is under a constant barrage of attacks: crooks steal other people’s accounts, or create new ones, then use Generative Artificial Intelligence (GenAI) to create convincing ads that just spoof other, known businesses.

These ads are then shown on the network, and different techniques are used to trick users into thinking they are visiting legitimate websites.

Now, Google says it is fighting fire with fire.

“This proactive approach helped us defend against bad actors. In 2025, we blocked or removed over 8.3 billion ads and suspended 24.9 million accounts, including 602 million ads and 4 million accounts associated with scams,” the company said.

Google Gemini now analyzes “billions of signals”, including account age, behavioral cues, and campaign patterns, to identify potential threats.

The company says these models are better at understanding intent, helping spot malicious content and preemptively block it, “even when it’s designed to evade detection”.

“Bad actors are using generative AI to create deceptive ads at scale, and Gemini helps us detect and block them in real time. By the end of last year, the majority of Responsive Search Ads created in Google Ads were reviewed instantly, and harmful content was blocked at submission — a capability we plan to bring to more ad formats this year.”

Google also stressed that its advertiser verification program provides an additional prevention layer.