
Storm-3075 and AI-Themed Phishing: The New Frontier of Social Engineering
Throughout 2026, cybercriminals increasingly exploited AI brand trust through sophisticated phishing campaigns targeting popular platforms like ChatGPT, Microsoft Copilot, DeepSeek, and Claude. Microsoft Threat Intelligence documented massive campaigns including a ChatGPT-themed operation sending 100,000 phishing emails daily to harvest credit card data, Claude-themed credential theft using adversary-in-the-middle techniques, and malvertising campaigns distributing Vidar stealer through fake AI Windows plugins. Storm-3075, an initial access broker, commoditized AI-themed malvertising across criminal networks, demonstrating the rapid scaling of these attacks. This trend reflects the broader evolution of social engineering attacks exploiting emerging technology hype cycles, with AI brands carrying significant trust and curiosity that attackers leverage to bypass traditional security awareness. The campaigns represent a paradigm shift from isolated phishing attempts to multi-stage attack chains spanning email, web, identity, and endpoint domains.
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