Because of the high amount of variables and unknowns in Bitcoin, proactive risk management is required to ensure that your business sails through storms and blows without losing momentum. Right from the start, when you think you are just wetting your feet, you will see high severity security and financial risks materialize. Ordinary startups, because they don't have to deal with such scenarios early on, normally can afford to focus almost solely on financial performance. This is not the case with Bitcoin. Here you must be prepared to deal with events of considerable risk level from day one. Knowing the main risks, and cultivating an internal culture of self supervision, will ensure you survive.