This is a long read but very worthwhile. It covers how the wired reporter's account was hacked. He goes through it step by step and it was remarkably easy. Major corporations building these solutions are not thinking through how secure these processes are. It is a bit like computers used to be a couple of decades back. There were so few breaches that folks just didn't worry about how secure computing was. Just as well, cloud computing and online services are so new that catastrophic failures are not frequent enough to force companies to take proper action. Let's hope this poor reporters bad fortune leads to better measures for the rest of us:
http://www.wired.com/gadgetlab/2012/08/apple-amazon-mat-honan-hacking/all/
http://www.wired.com/gadgetlab/2012/08/apple-amazon-mat-honan-hacking/all/