A “Kill Chain” Analysis of the 2013 Target Data Breach

http://www.commerce.senate.gov/public/?a=Files.Serve&File_id=24d3c229-4f2f-405d-b8db-a3a67f183883

Also a very interesting perspective and great commentary here -

http://blog.wh1t3rabbit.net/2014/03/analyzing-target-breach-kill-chain.html