BUSINESS

6 Whistleblowers Who Turned Out To Be Right After Being Ignored

UNITED STATES - SEPTEMBER 10:  Harry Markopolos, an independent financial fraud investigator and former money manager, speaks
UNITED STATES - SEPTEMBER 10: Harry Markopolos, an independent financial fraud investigator and former money manager, speaks during a hearing of the Senate Banking Committee in Washington, D.C., U.S., on Thursday, Sept. 10, 2009. The SEC's internal watchdog may recommend more than 40 actions aimed at improving investigations and examinations after the agency missed Bernard Madoff?s $65 billion Ponzi scheme. (Photo by Andrew Harrer/Bloomberg via Getty Images)

When Edward Snowden revealed himself as the whistleblower who leaked information about the National Security Agency's data collection program, he became the subject of troves of media attention and an international manhunt.

Such a situation is relatively rare. Consider the many whistleblowers -- especially those in corporate America -- who cry foul, only to watch those cries lead to little more than silence. Too often it ends up someone should have listened. Here are some such cases:

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Whistleblowers Everyone Ignored