I gave a talk at S4X20 in January on the Norsk Hydro ransomware attack. The full video has now been posted on YouTube:
Like all great presentations, it includes a Seinfeld reference 
Article Link: http://feedproxy.google.com/~r/ExploringPossibilitySpace/~3/1yw6mEhgsJo/s4x20-video-lessons-learned-from-norsk.html