When placing your applications and data in cloud services, the security of our resources and assets becomes a top priority. With the introduction of cloud computing, new security concerns emerged, such as how to deal with the security of highly virtualized environments. More specifically, how can you secure your virtual machine instances from targeted threats and attacks, and protect your data in a rapid provisioning and de-provisioning environment.
To provide more insight into these new challenges, IBM has written this paper to enable discussion around the new security challenges that cloud introduces and how these are addressed by IBM's cloud offerings. Read the white paper How does IBM deliver cloud security for more information, which is available for download at www-935.ibm.com/services/be/en/attachments/pdf/2012_05_23_3728_Cloud_Security_How_does_IBM_D.pdf
Secondly there is a developerWorks article that highlights some of the security topics that need to be considered...