- Google says Gemini has blocked 99% of malicious ads in 2025
- AI tools removed 8.3 billion ads and suspended 24.9 million accounts, including millions linked to scams.
- Gemini analyzes billions of signals to preemptively stop misleading ads designed by GenAI
Google revealed that its Gemini AI platform helped the company filter almost all malicious ads submitted to the Google Ads network in 2025.
In a new blog post, Google said its Gemini-based tools “dramatically improved” its ability to detect and stop bad ads, catching more than 99% of policy-breaking ads before they even serve.
“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 ad network on the planet, Google Ads is subject to a constant barrage of attacks: scammers steal other people’s accounts or create new ones, then use generative artificial intelligence (GenAI) to create compelling ads that simply spoof other well-known companies.
These advertisements are then distributed across the network and different techniques are used to trick users into thinking that they are visiting legitimate websites.
Today, Google says it is fighting fire with fire.
“This proactive approach has helped us defend against bad actors. In 2025, we blocked or removed more than 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 signals, and campaign patterns, to identify potential threats.
The company says these models are more effective at understanding intent, helping to spot malicious content and preemptively block it, “even when it is 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. Late last year, the majority of responsive search ads created in Google Ads were reviewed instantly and harmful content was blocked upon submission – a feature we plan to expand to more ad formats this year.”
Google also emphasized that its advertiser verification program provides an additional layer of prevention.
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