Apple Has Paid Out $20 Million to Security Researchers for Finding Bugs
The company has paid out nearly $20 million in bug bounties since opening its Security Bounty program up to all researchers in 2019
iOS bounty program
Apple’s iOS Bug Bounty Program Isn’t Lucrative Enough For Hackers
Security researchers are unwilling to report bugs to Apple as it would hamper their further research into the OS; for the hackers who are doing it for making money, selling bugs directly to Apple is not profitable.