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Apple’s New Memory Integrity Enforcement

ID: ea526522-4ab8-5c17-a4b7-2b4600612fa6

STIX ID: report--ea526522-4ab8-5c17-a4b7-2b4600612fa6

Feed Name: Schneier on Security

Date Published: 2025-09-23

Date Updated: 2026-04-19

Author: Bruce Schneier

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Apple announced Memory Integrity Enforcement for iPhone 17, an always-on hardware/software defense built into its chips and based on Arm’s MTE/EMTE, which tags memory allocations with secrets to block unauthorized access and reduce memory-safety exploits (such as those used by spyware like Pegasus), while aiming to minimize performance impact.

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