OneKey Founder: Some Older iPhones Have Unpatchable Chip Vulnerabilities, Posing Risks to Seed Phrase Storage
OneKey's founder warned that some older iPhones have BootROM-level chip flaws (checkm8 and usbliter8) that iOS updates cannot fix, so storing seed phrases on them may be unsafe. Attackers with physical access and special tools could exploit them, though on models like the XS and 11 the passcode and Secure Enclave add protection. Users were advised to generate new seed phrases on trusted devices.
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