Abstract
By the investigation after The Great East Japan Earthquake, more than 50% of the companies do not make business continuity plan. By this article, I reviewed threats to information assets that you should have defended and the business continuity. About major threats, that is, large-scale earthquake and typhoon / torrential downpour, terrorism, other (a sudden massive blackout), I explained these contents obtained from past knowledge to give you a necessary image when you thought about business continuity plan. I believe that this article is useful for not only a desktop / practical training but also documentation of the business continuity plan. I am confident that the synergistic effect of documentation and the training becomes the key of the business continuity plan.
