@ Kelvin

People hire hackers all the time.

If I have a website that involves money transfer; Or I would like user comments protected; Or their passwords - I would definitely hire a hacker to exploit any loop holes overlooked by the developers.

I am sure PayPal; eBay, Amazon, Apple Store etc have hackers in their payrolls for periods at a time.

There is also the career called 'Reverse Engineers' - also a very lucrative business under category 'hackers' - usually hired by Competitors to take the apart the other people's products 

BR///