The iPhone's Lockdown Mode, available since 2022 on iOS 16 and newer, provides an "extreme" security layer for users potentially targeted by commercial spyware like NSO's Pegasus. Journalists, activists, and politicians are primary targets. To enable, users navigate to Settings > Privacy & Security > Lockdown Mode.
When active, the feature significantly restricts functionality: Messages blocks most attachments and link previews; Safari limits JavaScript, slowing or breaking websites; FaceTime only allows calls from recent contacts; wired connections are disabled when locked, and automatic connections to unsecured networks are prevented. 2G and 3G support is disabled, configuration profiles cannot be installed, and certain Apple services like Home invitations and Game Center become unavailable. While the feature offers flexibility to exclude specific contacts or websites, doing so reduces security. Apple offers enhanced bounties for bypassing Lockdown Mode, highlighting its importance.
Researchers confirmed devices in Lockdown Mode were immune to the Blastpass exploit. For the general public, Apple devices already include robust built-in security and privacy features. Spyware like Pegasus typically targets public figures deployed by governments.
If users suspect targeting, keeping all default protections on is advised, though trying the feature briefly can reveal its impact on daily usage.
Source: Engadget · Summarized by HeadlinesBriefing