Imagine applying for a job, acing the interview, and landing a role at a major company—only to find out the person hired wasn’t who they claimed to be. This isn’t a movie plot; it’s a real scheme that has shaken some of America’s biggest businesses.

Justice Department charged four North Koreans with posing as IT workers to steal U.S. companies money, it said Monday.

The Justice Department, in a series of indictments, has laid out the use of front companies as a way to further the North Korean IT worker scheme.