Apple, the most valuable company in the world, which is also known for its invincible security is facing the biggest leak ever. A source code belonging to the core functionality of the iPhone&rsquo;s iOS spotted on the Github. According to Motherboard and Redmond Pie, the available leak is the source code for iBoot. The part of the operating system is responsible for the successful booting process in iOS.The leak was first available on the Reddit a few months back, but just now being shared on the GitHub. The experts have already confirmed that the available source code is admissible. The leaked source code is found to be part of iOS 9, so it is not entirely related to the iOS 11. However iOS 11 still contains some files from iOS 9 as the basic structure of the operating system is same for both the versions.The iBoot source code cannot be compiled as some of the files are missing from the source code. But, the experts are continuously warning over the social media that the source code could be a benefit for the attackers against iOS security system. The tech experts explained the attackers could use the source code to find the iOS vulnerabilities and build jailbreak for it. In addition, the source code also contains a document that shares additional information over the iBoot. This could help in easily finding a bootrom vulnerability or building a permanent jailbreak for iPhone and iPads, Motherboard suggested.Apple is known for being very cautious and watchful over its security aspects, this is the first time the iBoot source code goes public. It will be very interesting to see how the iPhone maker will deal with this. However, the modern iOS devices are totally secure from any exploitation using the source codes with the help of Security Enclave. GitHub is a globally known platform for source code management functionalities, so the leak catches the interest of almost everyone.