Here is an interesting post which I think everyone will find useful:
“I came across a very interesting article/research this past month written by Michael Osterman from Network world. The article focuses on a very common question that most customers and decision makers ask when they are thinking of signing up for a Hosted Exchange account or establising an internal exchange solution: How secure is a hosted environment?
“This is a question I literally get every day and along the same lines I also get: “But how do I know that my information is really secure?” “What if it goes down will I lose everything?””