Different mechanisms are introduced and implemented to secure cloud data storage center, but each one has advantage and disadvantages. So , we need to
Identify the security challenges which are directly or indirectly affect cloud data security in the organization.
Identify and list the countermeasures that can be used to encounter those security challenges.
Address the effectively of these challenges in security policy that include security goal, policies, and security requirements. The management of the company first defines their Security Goals.
I think encryption is one of the techniques employed by Oracle to protect client's data and couple with the highly secure Operating System used. Then adequate monitoring software either inform of firewall or other means are put in place to monitor the accesibility and availabiliy of client's data.