And in a sign of serious the matter is, within hours of the leak being discovered, Apple filed a legal notice demanding that GitHub remove the source code.
If you're running an older iPhone or iPad that's stuck on iOS 9, then you need to plan some sort of escape strategy following this week's leak of Apple's iBoot source code to GitHub.
The code leaked onto GitHub claims to be designed for iOS 9 but much of it is likely to be found in iOS 11, making the leak potentially unsafe to Apple's mobile software.
While clarifying, the company said that the iPhone security doesn't rely on source code secrecy. It's too early to say whether the iBoot leak will have any impact on the security of iOS devices going forward.
However, making the code public could allow intrepid hackers to sniff around in iBoot and find their own vulnerabilities, only instead of reporting them to Apple, they could tap into the flaws and use them as vectors of attack against iOS.
The code began with the statement: "This document is the property of Apple Inc".
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Following the completion of the purchase, the director now owns 14,351 shares in the company, valued at approximately $222,296.99. The specialty retailer reported $0.52 EPS for the quarter, topping the Thomson Reuters' consensus estimate of $0.49 by $0.03.
Apple iOS and MacOS specialist Jonathan Levin told the website that the iBoot posting is "the biggest leak in history".
Apple has played down the possible negative consequences of the leak, saying that the old source code exposure would not cause any security concern.
The implication from the company is that even if the very latest version of the source code leaked, it would still not be represent a security threat, and this was further reduced by the age of the code.
An initial report from Motherboard said that the code could be retrieved on GitHub, a hosting service for software developers to publish and share code. "Assuming it is genuine, it has come from the inside somewhere".
By design, "the security of our products doesn't depend on the secrecy of our source code", Apple wrote in the statement. "There are many layers of hardware and software protections built into our products, and we always encourage customers to update to the newest software releases to benefit from the latest protections".