To encourage hackers to deliver the security vulnerabilities discovered on macOS, Apple finally agreed to open a Bug Bounty reward program of up to $200,000. Better still, to make their work on iOS easier, the brand will provide them with "Jailbraké" iPhones, usually reserved for developers.

For the little story: 

These "bug bounty" systems were created to encourage hackers to deliver vulnerabilities found in their software to publishers. Last February, for example, a certain Linus Henze - only 18 years old - refused to deliver a zero-day macOS flaw to Apple, as long as the company did not offer a bounty bug for this operating system. It was finally heard.

Source: 01NET