[newaccount74]

Can you elaborate? Who are these people? What kind of bounties do these people go after? Do they work on lots of small bounties or focus on a few big bounties? Do you personally know these people or are you just talking about the security researchers who discovered high impact issues in iOS?

[bashwizard]

I know some of them in person as I'm involved in the bug bounty scene myself. What they work on varies depending on skill set and interest. I do not personally know any security researchers with high impact vulnerabilites in iOS but those people get paid millions and you'll never hear about them.

What I do know is that they tend to sell their exploits through exploit brokers like Zerodium.