Menlo Security released its annual browser security report, identifying several drivers in the rise of browser-based attacks. To compile the report, Menlo Threat Intelligence analyzed more than 752,000 browser-based phishing attacks and studied the trends now shaping AI-powered threats. The research reveals that a surge in generative AI-based threats has spurred a 140% increase in browser-based phishing attacks compared to 2023, and a 130% increase specifically in zero-hour phishing attacks.
Microsoft, Facebook, and Netflix were the brands most commonly impersonated in browser-based phishing attempts. Generative AI services are also increasingly impersonated — in 2024, Menlo Security identified nearly 600 incidents of GenAI fraud, in which imposter sites used GenAI platform names to manipulate and exploit unsuspecting victims.
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