Abstract— Cloud computing is set of resources
and services offered through the Internet. Cloud
services are delivered from data centers located throughout
the world. Cloud computing facilitates its consumers by
providing virtual resources via internet. General example
of cloud services is Google apps, provided by Google and
Microsoft SharePoint. The rapid growth in field of “cloud
computing” also increases severe security concerns. Security
has remained a constant issue for Open Systems and
internet, when we are talking about security cloud really
suffers. Lack of security is the only hurdle in wide adoption
of cloud computing. Cloud computing is surrounded by many
security issues like securing data, and examining the utilization
of cloud by the cloud computing vendors. The wide
acceptance www has raised security risks along with
the uncountable benefits, so is the case with cloud
computing. The boom in cloud computing has brought lots of
security challenges for the consumers and service providers.
How the end users of cloud computing know that their
information is not having any availability and security
issues? Every one poses, Is their information secure? This
study aims to identify the most vulnerable security threats
in cloud computing, which will enable both end users and
vendors to know about the key security threats associated
with cloud computing. Our work will enable researchers and
security professionals to know about users and vendors
concerns and critical analysis about the different security
models and tools proposed.