“Sex Warfare” Espionage Targets Silicon Valley Tech Firms

Silicon Valley, CA: U.S. intelligence agencies are warning that Chinese and Russian operatives are increasingly using romantic and personal relationships to infiltrate America’s tech sector, a tactic dubbed “sex warfare.” Unlike cyberattacks, these operations rely on human intelligence (HUMINT) to access trade secrets, intellectual property, and defence-related data.

Experts say the strategy exploits Silicon Valley’s culture of openness, with suspicious connections observed on platforms like LinkedIn and at industry events. The U.S. National Counterintelligence and Security Center describes this as a “fusion of human and cyber espionage,” representing a hybrid threat to both corporate innovation and national security.

Economically, intellectual property theft costs the U.S. up to $600 billion annually, mostly attributed to China. Historically, such seduction-based espionage has roots in Cold War tactics, with Russia and China reportedly modernizing these methods to target venture investors, engineers, and data scientists.

The phenomenon underscores the geopolitical race over AI, semiconductors, and defence technologies, pushing companies to bolster background checks, employee training, and behavioural monitoring alongside traditional cybersecurity measures.