A deep dive into iOS Exploit chains found in the wild
> It is worth noting that none of the exploits bypassed the new, PAC-based JIT hardenings that are enabled on A12 devices.I'm surprised Apple doesn't talk more about how they're continuously upgrading the security of iPhones with new chip generations. I remember the BlackHat presentation on iPhone security from a few years ago [0] also found that there were attacks on older iPhones which didn't work on the (then-)newer ones. Is Apple afraid it will give the impression that existing phones are not secure?[0]: https://news.ycombinator.com/item?id=12231758