A recent Menlo Security report identifies several key drivers behind the sharp rise in browser-based attacks, including AI-powered attacks, phishing-as-a-service (PhaaS) and zero-day vulnerabilities. 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, researchers 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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