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And Pwn20wnd is confident that there's more jailbreaking to come. Regardless, both the leak and the jailbreak of a current iOS version indicate a shift in the atmosphere surrounding iOS security. But Pwn20wnd denies any connection: 'Not at all, I don't operate with leaked iOS builds.' Wardle suggests that the iOS 14 leak may be related somehow to Unc0ver's new iOS 13.5 jailbreak release.

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'The rest of iOS 14 will be out in beta shortly,' Wardle says, 'but in my opinion having access now to internal content-security tools, tests, and fuzzer-would be the most valuable part of the leak to security researchers.' A fuzzer is a tool for seeing how software handles invalid or unlikely inputs, helpful for heading off unintended behavior. The leak isn't a complete build of iOS 14, and it will likely be very different from the final release later this year, but it still gives experienced researchers a head start on analyzing the operating system.ДЄnd if the leak is truly an internal iOS build, it likely includes some of Apple's own analysis tools that are never released publicly, says Patrick Wardle, an Apple security researcher at the enterprise management firm Jamf. The revelation explains how news of upcoming iOS 14 features has trickled out consistently for weeks. Meanwhile, Motherboard reported on Friday that a leaked early version of iOS 14, the operating system that isn't slated to be released until September, has been circulating among a small group of researchers since February, if not before.

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In September, Zerodium sold an Android hacking tool for more than its iOS tools for the first time. And the company suggested that iOS exploit chains used to take over iPhones-once coveted for their power and scarcity-may soon drop in price, perhaps indicating that iOS vulnerabilities are now easier to come by. The firm Zerodium, which buys and sells zero-day exploits, said last week that it is pausing collection of most types of iOS vulnerabilities due to high supply.

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The kernel modifications the jailbreak tool makes don't persist when you reboot your device, but the jailbreak files themselves remain in the device's filesystem, making it easy to reestablish the jailbreak by simply running the tool again.ДЄpple has had its hands full with iOS security complications in recent weeks. If you back up your device before installing the jailbreak, you can later erase all traces of it by reverting to that backup. 'Having a full-fledged jailbreak makes future security research easier,' Pwn20wnd says.ДЇor its part, the new Unc0ver jailbreak can be very stealthy. 'It only enables reading new jailbreak files and parts of the file system that contain no user data.' 'This jailbreak basically just adds exceptions to the existing rules,' Unc0ver's lead developer, who goes by Pwn20wnd, told WIRED. And the group claims that it preserves Apple's user data protections and doesn't undermine iOS' sandbox security, which keeps programs running separately so they can't access data they shouldn't.

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Unc0ver says that its jailbreak, which you can install using the longtime jailbreaking platforms AltStore and Cydia (but maybe don't unless you're absolutely sure you know what you're doing), is stable and doesn't drain battery life or prevent use of Apple services like iCloud, Apple Pay, or iMessage. It's been years since a jailbreak has been available for a current version of iOS for more than a few days-making this yet another knock on Apple's faltering security image. But on Saturday, a hacker group called Unc0ver released a tool that will 'jailbreak' all versions of iOS from 11 to 13.5. Over the years, Apple has made it prohibitively difficult to install unapproved software on its locked-down devices.