Intelligence Chiefs Warn of 'Unprecedented' Chinese Theft of Data, Urge Vigilance

Intelligence chiefs warn China's theft of intellectual property, trade secrets, and personal data is unprecedented in scale.

FBI director says China is the defining threat of this generation with over 2,000 active investigations.

Methods involve cultivating unsuspecting employees and academics through networking sites.

Chinese companies overseen by the Communist Party frequently involved in espionage.

Intelligence chiefs urge vigilance and partnerships across countries and with private sector to respond.