- Google says Gemini blocked 99% of malicious ads by 2025
- AI tools removed 8.3 billion ads, suspended 24.9 million accounts, including millions linked to fraud
- Gemini analyzes billions of signals to proactively stop misleading GenAI-generated ads
Google has revealed that its Gemini AI platform has helped the company filter out almost all malicious ads sent to the Google Ads network by 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 continue to evolve our defenses to stay ahead of even the most advanced systems,” Google said.
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Billions of signals
As arguably the largest 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 simply spoof other well-known companies.
These ads are then displayed on the network and various techniques are used to trick users into thinking they are visiting legitimate websites.
Now Google says it’s 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 linked to fraud,” the company said.
Google Gemini now analyzes “billions of signals,” including account age, behavioral signs and campaign patterns, to identify potential threats.
The company says these models are better at understanding intent, helping to spot malicious content and preemptively blocking it “even when it’s designed to avoid detection”.
“Bad actors use generative artificial intelligence 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 malicious content was blocked upon submission – a feature we plan to bring to more ad formats this year.”
Google also emphasized that its advertiser verification program provides an additional layer of prevention.
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