So, no security researcher will release that in public for free instead of going to Apple and telling them that guys I have found this, you can pay me for this vulnerability and they will fix it and that is the reason whenever you see your iPhone weekly, monthly, basically you will not only get the main updation software releases, but also you get security releases also which are like 150 MB, 200 MB. So, in this way Apple is very proactive in terms of securing their users from a hardware point of view and from the operating system point of view.
