
Memory Integrity Enforcement (MIE) is the culmination of an unprecedented design and engineering effort spanning half a decade that combines the unique strengths of Apple silicon hardware with our advanced operating system security to provide industry-first, always-on memory safety protection across our devices — without compromising our best-in-class device performance. We believe Memory Integrity Enforcement represents the most significant upgrade to memory safety in the history of consumer operating systems.
Memory Integrity Enforcement is the culmination of a truly incredible amount of work :)
While there's so much to love, one of my favorite pieces was getting to bring kalloc_type-style isolation to out-of-bounds accesses on both the architectural and speculative path. This lets us both mitigate a variety of Spectre v1 style attacks and break the reliable exploitation of some of the most powerful first-order memory corruption primitives (arb offset OOB R/W).
https://security.apple.com/blog/memory-integrity-enforcement/

Memory Integrity Enforcement (MIE) is the culmination of an unprecedented design and engineering effort spanning half a decade that combines the unique strengths of Apple silicon hardware with our advanced operating system security to provide industry-first, always-on memory safety protection across our devices — without compromising our best-in-class device performance. We believe Memory Integrity Enforcement represents the most significant upgrade to memory safety in the history of consumer operating systems.
The #SwiftUI team is growing, and we’re looking for more managers!
We have an incredible team, and it’s been a privilege to help support truly brilliant people doing amazing work on the frontiers of Apple’s development platform.
And I’ll be honest: this is a demanding role! We expect managers on our team to be deep in the technical details right alongside our engineers, while also helping coordinate with dozens of other teams throughout Apple. But for people who thrive at the boundary between people and technology, it’s hard to think of a more fulfilling role (and with a truly wonderful team!)
https://jobs.apple.com/en-us/details/200609851/swiftui-frameworks-engineering-manager
🆕 on the Security Blog: Private Cloud Compute
Built with custom Apple silicon and a hardened operating system, Private Cloud Compute extends the industry-leading security and privacy of Apple devices into the cloud, making sure that personal user data sent to PCC isn’t accessible to anyone other than the user — not even to Apple.

Secure and private AI processing in the cloud poses a formidable new challenge. To support advanced features of Apple Intelligence with larger foundation models, we created Private Cloud Compute (PCC), a groundbreaking cloud intelligence system designed specifically for private AI processing. Built with custom Apple silicon and a hardened operating system, Private Cloud Compute extends the industry-leading security and privacy of Apple devices into the cloud, making sure that personal user data sent to PCC isn’t accessible to anyone other than the user — not even to Apple. We believe Private Cloud Compute is the most advanced security architecture ever deployed for cloud AI compute at scale.
Big changes this year to SwiftUI’s concurrency-related API annotations!
These changes will especially help with using SwiftUI with the Swift 6 language mode and strict concurrency (but will also help in your Swift 5 codebases as well!).
We’ll continue to refine and optimize our APIs for Swift concurrency throughout the betas. Your feedback will be critical!
https://mastodon.social/@twostraws/112594020437220033