what is cloud computing?

Cloud computing is a delivery platform which promises a new way of accessing and storing personal as well as business information. Cloud computing refers to the practice of transitioning computer services such as computation or data storage to multiple redundant offsite locations available on the Internet, which allows application software to be operated using internet-enabled devices.
In Existing data protection mechanisms such as encryption was failed in securing the data from the attacker. It does not verify whether the user was authorized or not.
Cloud computing security does not focus on ways of secure the data from unauthorized access.
In 2009 we have our own confidential documents in the cloud. This file does not have much security. so, hacker gains access the documents. Twitter incident is one example of a data theft attack in the Cloud.

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