This is a very interesting article on the issues behind the Equifax breach. Unpatched servers are a symptom of a bigger problem. Identification and authentication methods and motivation of business to fix issues are the real problem.
http://talkingpointsmemo.com/edblog/the-real-problem-with-equifax?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Talking-Points Memo+%28Talking+Points+Memo%3A+by+Joshua+Micah+Marshall%29