Cloud Data Security

The cloud computing is a new computing model which comes from grid computing, distributed computing, parallel computing, virtualization technology, utility computing and other computer technologies and it has more advantage characters such as large scale computation and data storage, virtualization, high expansibility, high reliability and low price service. The security problem of cloud computing is very important and it can prevent the rapid development of cloud computing. This paper introduces some cloud computing systems and analyses cloud computing security problem and its strategy according to the cloud computing concepts and characters. The data privacy and service availability in cloud computing are the key security problem. Single security method cannot solve the cloud computing security problem and many traditional and new technologies and strategies must be used together for protecting the total cloud computing system.

Few proposed techniques for data safety are:

1. Data Encryption:

                Data can be encrypted before storing in cloud storage and then again decrypted while retrieving but if the data is huge this method proves to be very slow and time consuming

2. Customer Right:

Customers should have the right of the supervision and audit of cloud computing services in order to fully ensure the security of customer data
3. Virus Protection:

The communication of worms, virus and Trojan in cloud computing platform within the network of internal and external must be controlled. Malicious programs must be isolated promptly. Damage to the system must be repaired immediately.