About Lockdown Mode Lockdown Mode helps protect devices against extremely rare and highly sophisticated cyber attacks. What is Lockdown Mode? Lockdown Mode is an optional, extreme protection that’s designed for the very few individuals who, because of who they are or what they do, might be personally targeted by some of the most sophisticated digital threats. Most people are never targeted by attacks of this nature. When Lockdown Mode is enabled, your device won’t function like it typically does. To reduce the attack surface that potentially could be exploited by highly targeted mercenary spyware, certain apps, websites, and features are strictly limited for security and some experiences might not be available at all. Lockdown Mode is available in iOS 16 or later, iPadOS 16 or later, watchOS 10 or later, and macOS Ventura or later. Additional protections are available starting in iOS 17, iPadOS 17, watchOS 10, and macOS Sonoma.