Apple recently released iOS 16 for the iPhone, which introduced a new security setting called “Lockdown Mode” (this feature will also be coming soon for the iPad and macOS). It increases the security of your device, to defend against some “extreme” attacks.
Owners of valuable domain names (or other digital assets like crypto/NFTs), CEOs, celebrities, journalists, and other “high value targets” might want to enable Lockdown Mode for extra protection.