Hackers exploit the lucrative software vulnerability trade

Once freely exposed or given to software makers at no cost, the business of finding and documenting security vulnerabilities has evolved into a lucrative business that supports companies and freelance hackers around the globe. In a New York Times profile, reporters Nicole Perlroth and David Sanger explore the newly-legitimized hacker underworld, where a valuable zero-day exploit in Windows, Linux, or iOS can earn a payday of five or even six figures -- and many of the customers are government ag...