Silvia Candiani has been promoted to corporate vice president of the recently launched Microsoft Frontier Company, while Microsoft Elevate has hired a former UNICEF leader as vice president. Amazon Web Services has promoted a director of global sustainability.

Warning follows series of safety incidents, with committee saying threats include public face-scanning and deepfakes

Tech stocks fell as AI warnings from Dario Amodei and Elon Musk fueled investor concerns.Nvidia and SpaceX both slipped amid AI slowdown calls, with memory companies also seeing big losses.Asian markets,