The firm also showcased an untethered jailbreak for the iPhone 18 Pro running iOS 27.0.1, Apple's current public software release. This exploit enables a root shell to be established within 2 minutes of booting the device and ensures administrative access persists across system restarts. Unlike tethered alternatives, the Calif exploit does not require a connection to an external computer to maintain control after a reboot.
Tuesday, October 20, 2026
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Calif Demos 1 Click Signal Attack to Run Code on iPhone
Cybersecurity4 days ago
A series of technical presentations at the Hexacon conference in Paris revealed that the Signal and iMessage apps can be used to compromise iPhones. Security firm Calif demonstrated 1-click attacks that allow for the execution of arbitrary code on the device through a single user interaction. The company stated that the technical details of these vulnerabilities, along with other tools presented at the event, will be released later.
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