Access Control and Data Updation in Cloud Computing

Compared with the single-owner manner, where only the group manager can store andmodify data in the cloud, the multiple-owner manner is moreflexible in practical applications. More concretely, each userin the group is able to not only read data, but also modify his/her part of data in the entire data file shared by the

Organizations use the Cloud in a variety of different service models (SaaS, PaaS, IaaS) and deployment models (Private, Public, Hybrid). There are a number of security issues/concerns associated with cloud computing but these issues fall into two broad categories: Security issues faced by cloud providers (organizations providing software-, platform-, or infrastructure-as-a-service via the cloud) and security issues faced by their customers.In most cases, the provider must ensure that their infrastructure is secure and that their clients’ data and applications are protected while the customer must ensure that the provider has taken the proper security measures to protect their information.

User can store their data on cloud and reveal from the local data storage and its maintenance. Cloud is in a distributive in nature includes shared pool of configuring resources both in hardware and software. As an increasing number of clients who store their

In the past few years cloud computing has become the latest mainstream technology for individuals and businesses(McDermott, 2009). Cloud defines the use of assembly of services, infrastructure, information and applications which are comprised of pools of network, compute, information and storage assets. The cloud is a centralized shared data storage network that enables an individual or business to be able to store personal data such as: personal files, images and videos etc.(Camp, 2009). It offers the convenience to be able to store personal data in one centralized location and allows easy access to the data even from a remote location by use of user assigned passwords and user login details. This concept may sound straight forward, easy and user friendly but cloud computing poses potential security threats that can possibly put the user’s privacy and security at risk in case another party is able to log in their account, resulting in an unsafe storage of their personal information. Users are assured that their data is safe and won’t be exploited, however the user does not have control where the data is being stored and cannot track precisely how well their data is being protected(McDermott, 2009). In most cases, users just rely on trust and confidence to their storage provider that they can be able to securely store their data and prevent unauthorized persons from accessing the data. This means users are unsure of who and what may be accessing their data and

From the viewpoint of data security, which has always been an important form of quality of service, Cloud computing surely poses new challenging security threats for number of reasons. Firstly, traditional cryptographic primitives for the purpose of data security protection cannot be straight accepted due to users loss control of data under cloud computing. Therefore, verification of correct data storage in the cloud must be attended without accurate knowledge of the whole data. Considering different kind of data for every user stored in the cloud and the requirement of long term continuous security of their data safety, the problem of checking correctness of data storage in the cloud becomes even more challenging.[1]

Abstract—The field of cloud computing has grown in popularity over the years with big software giants like Amazon, Microsoft and Google providing their own offerings. Some of features which make the cloud so attractive is the fact that it provides rapid elastically and easy scalability. Even though cloud adoption has been quite rapid, many of the business are reluctant to move to the cloud owing to the security and privacy concerns associated with the cloud. In this survey paper, we explore some of the security issues in cloud computing and the current efforts of the research community to tackle these issues.

The ever growing need for the data in Information technology organizations has always lead to invent new services to meet the data needs, whether it is in the form of software, platform, hardware or storage. Cloud computing provides this services to organizations with cost effective methodologies like pay per service, network access, on-demand self-service. Organizations no more have to worry about storage overhead. This services has made huge impact on the organizations business process (Q. Wang, C.Wang, and Ren) (2011). At the same time with increase in technological services, the ever growing services are restricted due to security. Organizations use storage as a service to store their data remotely over cloud however the security of data is not guaranteed which leads to problems like data integrity, data availability, and data correctness. Various models has been proposed to address this data integrity concern over cloud (Chakraborty, Dhami, bansal), (2013).

The impacts of cloud computing has touched almost every area of Information Technology. The information kept in the cloud is private and confidential and protected by laws that regulate it and protects it. The cloud providers faces laws that relate to the preservation of critical information touching on taxes, security, and sometime employment regulations. Also in other circumstances, they are forced to comply with laws requiring them to destroy such

One of the main reasons to deliver security and privacy for the data in cloud computing is, as it utilizes distributed resources in an unsecured location or environment to allocate their services among people that belong to different organizations [1]. Enlargement in cloud adoption rates will result in increased computing security problems [2]. The greatest terror of cloud clients is that, most of the companies are not relaxed or comfortable accumulating their data and applications on systems that exists outside of their own assumed data centers [3]. Increased security of potential unwarranted approach and discovery to customer’s personal information is caused by relocating workloads to a distributed infrastructure. Data security and privacy protection issues are relevant to both hardware and software in the cloud architecture. This study is to review different security challenges and solutions for protecting data in the cloud and also aims at enhancing the data security and privacy protection for the trustworthy cloud environment. In this paper, we made a research analysis of an overview of security and privacy levels in secure provisioning and composition, about the interfaces which are been provided to user throughout the data storage and recovery and backup techniques which have been developed in the cloud p province where the data of the clients can be backed up[4]

Usage of remote servers via internet to store, manage and process data instead of using a personal computer is known as Cloud computing. It’s a set of Information Technology services with the ability to scale up or down their service requirements. Most of the cloud services are provided by a third party service provider. In cloud computing, organizations can utilize IT services without in advance investment. Despite its benefits obtained from the cloud computing, the organizations are slow in accepting it due to security issues and challenges. Security is one of the major problems which hinder the growth of cloud. It’s not wise to handing over the important data to another company; such that clients need to be vigilant in understanding the risks of data infringement in this new environment. This paper discusses a detailed analysis of the cloud computing security issues and challenges. (Ayoleke)

Cloud computing security or also known as cloud security talks about a broad set of technologies, policies and controls deployed to protect applications, data, and the corresponding infrastructure of cloud computing. The cloud is a great invention to allow high capacity storage of data but without the cost to allow sharing of resources in a quick and timely manner. With technology becoming advanced in such a short amount time, new steps must be created to protect people information from being hacked. Hacker’s mission is determined by greed, anger, or request to damage their victims and the organization they might be a part. No one can actually stop all the potential vulnerabilities from being breached, but the provider and clients

While users want to have their data stored in the cloud, they need assurance that their data is secure and safe. In this research paper, we will describe in details a mechanism of tracking data usage using accountability. This mechanism ensures that any access of the data stored in the cloud is monitored, authorized and recorded. Accountability can be referred to as the process of checking the authorization policies to ensure transparency in data access. We will use the JAR programming to improve privacy and security of the data stored in the cloud. Using this technique, it is possible for the data owner to know whether the handling of data stored in the cloud is in line the agreed-upon service-level agreement.

Depending on the length of work that one would like to choose with, cloud computing offers four types of delivery models namely, “public cloud”, “private cloud”, “community cloud” and “hybrid cloud”. User is also free to choose the amount of control one would like to have on their data that is stored in the cloud. The cloud providers offer three types of services which give users different types of permissions. More permissions the user hold, the more control and privacy obtained on the data.

Storage-as-a-service (Saas) offered by cloud service providers (CSPs) is a paid facility that enables organizations to outsource their sensitive data to be stored on remote servers. In this paper, we propose a cloud-based storage schemes that allows the data owner to benefit from the facilities offered by the CSP and enables indirect mutual trust between them. This Paper provides different authentication techniques and algorithms for cloud security.

This chapter enumerates details on the different ways the data can be breached in cloud. Access to unlimited resources makes it easy for the attackers to crack the security protocols and all the encryptions algorithms deployed on the cloud server. The number of ways to breach in the privacy and security in the cloud is detailed in the chapter. Also in this chapter we will discuss the motives of an attacker.