Calif.io Breaks Apple's iOS Lockdown Mode, Persists Through Update
Security team Calif.io has bypassed Apple's Lockdown Mode on iOS 27, and the compromise reportedly survives a system update. It follows their untethered jailbreak.
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giftdetect· the right gift in minutesThe security team Calif.io says it has defeated Apple's Lockdown Mode, the iPhone's strictest protection setting. According to the report, the compromise also remains in place after a system update.
The result follows the team's earlier work: Calif.io had already presented what is described as the first untethered jailbreak for iOS 27. An untethered jailbreak does not need to be re-applied after a reboot. Overcoming Lockdown Mode is the next step, and the researchers say that is not all they achieved.
Why it matters
Apple introduced Lockdown Mode for users who may be targeted by highly sophisticated attacks, such as journalists, activists and politicians. It deliberately cuts down the attack surface of the device. A bypass that survives updates would undermine the promise that a patch cleans up a compromised device.
What comes next
The material available so far does not detail the technical method, the vulnerabilities involved or whether Apple has responded. Whether and how quickly Apple closes the underlying flaws will determine how far affected users are at risk. Until details emerge, the finding is best read as a sign that even Apple's hardest security mode is not immune to determined research teams.
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