The FBI paid professional hackers to crack an iPhone 5c that belonged to one of the San Bernardino shooters, it has been reported. Black hat hackers identify software flaws to exploit for their own use; white hat hackers report software flaws to companies so they can fix them.
http://www.dailymail.co.uk/news/article-3537229/FBI-paid-professional-hacker-break-San-Bernardino-terrorist-s-iPhone.html
http://www.dailymail.co.uk/news/article-3537229/FBI-paid-professional-hacker-break-San-Bernardino-terrorist-s-iPhone.html