China-Aligned TA419 Targets U.S. AI Policy Experts With Microsoft AitM Phishing

China-Aligned TA419 Targets U.S. AI Policy Experts With Microsoft AitM Phishing Ravie LakshmananOct 04, 2026Cyber Espionage / Phishing A new China-nexus cyber espionage group known as TA419 has been attributed to multiple credential phishing campaigns targeting artificial intelligence (AI) experts working for U.S. think tanks, universities, and legal sector organizations. The campaigns have impersonated prominent economists and AI policymakers, as well as a prominent Anthropic employee, to single out an AI policy expert at a U.S. think tank in February 2026. The phishing email carried the subject line "Request for Feedback on Military Integration of Claude." "This activity likely supports wider Chinese intelligence objectives to better understand ongoing developments within the U.S. AI policy and regulatory landscape and occurs amid…