Cloud computing provides its user a lot of advantages but this technology has quite a bit of flaws as well. One of main flaw in cloud is the security present in the cloud. There are various threats, attacks and security issues that pertain in cloud. Among all the attacks DoS is a crucial one. The main aim of this attack is to bring down the services and resources and thus effecting everyone who is accessing the resource. This paper discusses about the Denial of Service attack or DoS attack in cloud environment and what are the various detection methods which have been proposed for the same.There are various benefits of using cloud over a traditional approach. Cloud helps to reduce the cost; it provides global accessibility, unlimited storage capacity, improved performance and many more advantages but apart from providing a lot of benefits there are various issues which are associated with cloud. One of the major issues associated with cloud is the security associated with the cloud. As we know in cloud every user has access to the data residing in the cloud so security of data is a major concern. Apart from the data security there are several threats like manin-the-middle, spoofing/sniffing, account or service hijacking etc. These threats aims to make the services of cloud weaker and sometimes even bring down them down.
Cloud computing is a technology which allows users to share resources and data over the Internet. Cloud computing represents the maturing of technology and is a pliable, cost-effective platform which provides business/IT services over the Internet. Although there are various benefits of adopting this technology, there are some significant barriers to it and one of them is security. Cloud computing is still growing and there is still uncertainty about how security is achieved, at all levels (network, host, application, and data), in cloud. In computing environment like cloud where whole infrastructure is shared by millions of users, attacks like denial-of-service are likely to have a much greater footprint than other attacks. The main aim of denial-of-service attack is the disruption of services by attempting to limit access to a machine or service instead of subverting the service itself. This paper tested the efficiency of artificial bee colony, a swarm approach, for finding denial-of-service attack in a cloud environment and finds that it is useful in tackling denial-of-service attacks.
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