Cobo founder DiscusFish has announced that the new iPhone 17 introduces a Memory Integrity Enforcement (MIE) feature designed to enhance crypto wallet security. The system combines hardware and software protections to block advanced memory attacks during crypto wallet signing processes.
Apple detailed the MIE technology in a September 9 blog post, explaining that it is powered by the A19 chip and utilizes Enhanced Memory Tagging Extension (EMTE) for real-time memory monitoring. The system instantly blocks common exploits including buffer overflows and use-after-free attempts.
The feature addresses a critical vulnerability in the crypto industry, as memory flaws account for nearly 70% of all software vulnerabilities and serve as common entry points for malware during wallet operations. Signing processes have historically been prime targets for hackers, since compromising these operations can lead to fund theft. Apple’s MIE technology stops these attacks at the hardware level before damage occurs, making wallet signing significantly safer and more resistant to spyware attempts to steal assets.
The protection operates automatically without requiring user configuration. DiscusFish described the feature as a major advancement for high-net-worth crypto users and frequent signers. Apple has also implemented Tag Confidentiality Enforcement (TCE) to address side-channel risks, preventing attackers from exposing memory tag values through speculative execution or other methods.
Apple’s security team confirmed that MIE underwent testing against real-world exploit chains, with most attacks stopped in their earliest stages.
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