OneKey founder warns iPhone 11 and older models pose crypto wallet risks

OneKey founder Yishi Wang has warned cryptocurrency holders against storing wallet seed phrases on older iPhones, citing chip-level security vulnerabilities that remain exploitable even after a factory reset or disconnection from the internet. OneKey founder Yishi Wang warns that older iPhones have hardware vulnerabilities that iOS updates cannot fix. Checkm8 affects iPhone 4S through iPhone X, while usbliter8 affects iPhone XS, XR, 11 and second-generation SE models. Attackers need physical access and specialized equipment, while passcodes and the Secure Enclave provide additional protection. Users storing recovery phrases on affected devices are advised to generate new phrases and transfer their assets.