Published onApril 22, 2026The Direction of a Safe Default: Why keychainAccessible Makes "Convenience" the Default and Leaves "Security" to YouReact-NativeExpoSecureStoreSecurityMechanism-AnalysisAn option no build will flag and only review can catch — how expo-secure-store's default keychain class syncs passwords to iCloud, and why "when you read it" is the decisive variable for choosing a class.