Refer to this article from Enterprise IT News
1.) Loss of governance - how to be in charged when you do not own the infrastructure ?
2.) Potential insecurity of shared infrastructure - security on a shared infrastructure, how to get it work ?
3.) Data lost and leakage - Confidentiality service level agreement (SLA). Is there such thing ?
According to Ivan Wen, the Country Manager of Sourcefire Malaysia.
1.) Evaluating the cloud vendors.
2.) Start planning now.
3.) Trial and error on private cloud first.