This new feature protects millions of iPhones without slowing them down, rewriting the balance of power between Apple and spyware.

Apple’s memory-based security is specifically designed to protect users against complex and advanced exploit chains.

Might one silicon-level change render top-of-the-line spyware so costly to construct? Apple is wagering that it might, with its iPhone 17. Apple’s new Memory Integrity Enforcement (MIE) system, which ...