Paper suffers from occasional poor English.
Focuses on two main area's, traditional security problems which affect all web services and browsers (and therefore Cloud systems too) and those which are Cloud specific.
Highlights only one main Cloud Security issue, that of DOS Attacks through flooding. The authors highlight the problem that Cloud systems are supposed to be extensible under high demand, and therefore a Cloud system under attack may mistake the flooding for a legitimate period of high demand and therefore request more resources. This can have a knock on effect to other services hosted on the same Cloud system, should one instance begin to commandeer a vast amount of resources.
This problem can further increase if the cloud system migrates the service to additional servers in order to provide more computational resources.
Finally, the point out that should the attack be mounted from an another (similar) cloud platform then an effective "race in power" will occur as both systems escalate their computational resources to create and fend the attack.
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- 2009-11-05 17:47:30
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The Cloud Computing concept offers dynamically scalable resources provisioned as a service over the Internet. Economic benefits are the main driver for the Cloud, since it promises the reduction of capital expenditure (CapEx) and operational expenditure (OpEx). In order for this to become reality, however, there are still some challenges to be solved. Amongst these are security and trust issues, since the user's data has to be released to the Cloud and thus leaves the protection-sphere of the data owner. Most of the discussions on this topics are mainly driven by arguments related to organizational means. This paper focuses on technical security issues arising from the usage of Cloud services and especially by the underlying technologies used to build these cross-domain Internet-connected collaborations.
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