An FBI arrest revives fears that U.S. tech companies are hiring spies

Silicon Valley relies on foreign talent to compete in the global AI race. Some tech leaders say that’s a national security risk. On paper, Abdulrahman Alfozan seemed like an ideal candidate for one of Silicon Valley’s most coveted artificial intelligence jobs. The Saudi national attended the Massachusetts Institute of Technology and landed an engineering job at Meta, according to his LinkedIn page and online records. Alfozan later secured a green card, spoke enthusiastically on a podcast about his Silicon Valley career and was invited to speak at Stanford University, all while working as a part-time partner at a venture capital...