To numerous to mention without an essay. Have a look at some of these discussions.
This should get you started. However securing cloud based products (or setting them up in the first place) is a HUGE topic with so many aspects each of which is vital to security and reliability. It's time to get some consultants you trust.
Last Wiki Answer Submitted: July 19, 2011 1:40 pm by ErroneousGiant3,120 pts.