China-Linked TA419 Targets U.S. AI Policy Experts With Microsoft Adversary-in-the-Middle Phishing

The China-aligned espionage group TA419 has conducted credential phishing campaigns targeting U.S. AI policy experts, using sophisticated adversary-in-the-middle phishing techniques disguised as Microsoft login pages to steal credentials without detection.

This Wire brief sits within Fusion42's coverage of AI Infrastructure, and 8 sources have reported it between 1 Oct 2026 and 6 Oct 2026.