Cloud Computing Security Threats and Responses
Faculty of Computer Engineering
Hybrid clouds. A public cloud is standard model which
providers make several resources, such as applications and
storage, available to the public. Public cloud services may be free or not. In public clouds which they are running
applications externally by large service providers and offers some benefits over private clouds. Private Cloud refers to
internal services of a business that is not available for
ordinary people. Essentially Private clouds are a marketing
term for an architecture that provides hosted services to
particular group of people behind a firewall. Hybrid cloud is an environment that a company provides and controls some
resources internally and has some others for public use. Also there is combination of private and public clouds that called Hybrid cloud. In this type, cloud provider has a service that has private cloud part which only accessible by certified staff and protected by firewalls from outside accessing and a
public cloud environment which external users can access to
it. There are three major types of service in the cloud
environment: SaaS, PaaS, and laaS . In cloud, similar to
every proposed technology, there are some issues which
involved it and one of them is RAS factor. For having good
and high performance, cloud provider must meet several
management features to ensure improving RAS parameters
of its service such as:
computing is one of today's most exciting
technologies due to its ability to reduce costs associated with computing
computing has grown from being a promising business idea to
one of the
fastest growing parts of the IT industry.
organizations have expresses concern about
implementation of cloud computing. These types of concerns
originate from the fact that data is stored remotely from the customer's location; in fact, it can be stored at any location. Security, in particular, is one of the most argued-about issues in the cloud computing field; several enterprises look at cloud computing warily due to projected security risks. The risks of compromised security and privacy may be lower overall,
however, with cloud computing than they would be if the data were to be stored on individual machines instead of in a so called "cloud" (the network of computers used for remote
storage and maintenance). Comparison of the benefits and
risks of cloud computing with those of the status quo are
viability of cloud
computing. Consequently, some issues arise that clients need to consider as they contemplate moving to cloud computing for
availability, and security issues for cloud computing (RAS
issues), and propose feasible and available solutions for some of them.
Cloud computing is a network-based environment that
focuses on sharing computations or resources. Actually,
clouds are Internet-based and it tries to disguise complexity for clients. Cloud computing refers to both the applications delivered as services over the Internet and the hardware and software in the datacenters that provide those services. Cloud providers use virtualization technologies combined with self service abilities for computing resources via network
infrastructure. In cloud environments, several kinds of virtual machines are hosted on the same physical server as
infrastructure. In cloud, costumers must only pay for what
they use and have not to pay for local resources which they
References: Eighth IEEE International Conference on Dependable, AutonomIc
and Secure Computing, Chengdu, China, 2009.
S. K. Tim Mather, and Shahed Latif, Cloud Security and Privacy:
O 'Reilly Media, Inc , 2009.
Francis Group, LLC, 2010.
in the Cloud. Available
 (2010). Security Management in the Cloud - Access Control.
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