Apple released iOS a couple days ago, and today also published some of the security fixes that were included in the software update. One of these corrections was related to failure to allow an application to bypass the code signing, which possibly was used for the (pseudo) semi-jailbreak, with which you can install applications from Safari. The failure was present in the iPhone 4S and later, iPhone touch of fifth and sixth generation and all iPad since the iPad 2.
Pangu and confirmed that Apple had corrected one of the exploits in iOS 9 GM was launched last week and have not yet said anything about it, so the error could be corrected the same announcement the Chinese hackers team last week or it could be another exploit, forcing them to get down to work to find new vulnerabilities that allow to jailbreak iOS in September.
Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later
Impact: An application may be able to bypass code signing
Description: An issue existed with validation of the code signature of executables. This issue was addressed through improved bounds checking.
CVE-2015-5839 : @PanguTeam, TaiG Jailbreak Team
As you can see, at the end of information both teams appear and hackers is not the first time Apple gives credit to the team that has discovered a vulnerability. In early 2013, the team of hackers evad3rs, who has lost prominence since the arrival of the Chinese to the scene, was pleasantly surprised to find that appeared like the discoverers of bug fixes, which is the closest thing to a shout they will receive from Apple.
Anyway, and although Apple tape an exploit after another, there is no perfect system, so it’s just a matter of time to find more bugs in iOS 9 which allow untethered jailbreak to the iPhone, iPod or iPad.