The challenge, so far as I can tell, is trying to come up with a compelling way to even explain what the tech people are so upset about.
Zdziarski gives it a try, expanding an analogy Bill Gates used. :
http://www.zdziarski.com/blog/?p=5714Also speaks to a $200 device that could crack 4 digit pass codes and a flaw not closed till iOS 8.1.1. The widening use of it was a factor in iOS 9 recommending 6 digit defaults. The device exploited a flaw where incorrect attempts wouldn't be stored in flash quickly, allowing a power interruption to stop the auto wipe counter.