To protect yourself against this problem, the best thing you can do now is make sure your device has a passcode on it. While this was posted in the jailbreak section of Reddit, the bug can affect non-jailbroken iPhones as well. Any 64-bit iOS product making use of an A7, A8, A8X, A9 and A9X chips will have the bug. Including the new iPhone 6S. Some assume this has to do with how iOS stores dates and time. And every part of the operating system that references the current time, which is many, ends up failing. No word as to whether the upcoming rumored iPhone 5se's will have a similar Achilles' heel. We'll have to wait for the mythical March event for an answer to that.