Christina Chapman presented herself as just another influencer on TikTok. In reality, she operated a “laptop farm” that allowed North Koreans to take jobs as U.S. tech workers and scam more than 300 U.S. companies out of millions of dollars. WSJ’s Robert McMillan breaks down the scam and Chapman’s crucial role in it. Annie Minoff hosts. Further Listening: - North Korea's Propaganda Mastermind - Your New Hire May Be a North Korean Spy - Hack Me If You Can Sign up for WSJ’s free What’s News newsletter . Learn more about your ad choices. Visit megaphone.fm/adchoices