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Cloud Computing Risk Assessment Report

The Cloud’s economies of scale and flexibility are both a friend and a foe from a security point of view

I've been traveling so there is a bit of a back log of news. In case you missed this, The European Network and Information Security Agency (ENISA), working for the EU Institutions and Member States has released a Cloud Computing Risk Assessment report. ENISA is the EU’s response to Information security issues of the European Union. As such, it is the 'pacemaker' for Information Security in Europe.

ENISA supported by a group of subject matter expert comprising representatives from Industries, Academia and Governmental Organizations, has conducted, in the context of the Emerging and Future Risk Framework project, an risks assessment on cloud computing business model and technologies. The result is an in-depth and independent analysis that outlines some of the information security benefits and key security risks of cloud computing. The report provide also a set of practical recommendations.



A few highlights of the report include:

- The Cloud’s economies of scale and flexibility are both a friend and a foe from a security point of view. The massive concentrations of resources and data present a more attractive target to attackers, but cloud-based defences can be more robust, scalable and cost-effective. This paper allows an informed assessment of the security risks and benefits of using cloud computing - providing security guidance for potential and existing users of cloud computing.

- Scale: commoditisation and the drive towards economic efficiency have led to massive concentrations of the hardware resources required to provide services. This encourages economies of scale - for all the kinds of resources required to provide computing services.

- Architecture: optimal resource use demands computing resources that are abstracted from underlying hardware. Unrelated customers who share hardware and software resources rely on logical isolation mechanisms to protect their data. Computing, content storage and processing are massively distributed. Global markets for commodities demand edge distribution networks where content is delivered and received as close to customers as possible. This tendency towards global distribution and redundancy means resources are usually managed in bulk, both physically and logically.

STANDARDISED INTERFACES FOR MANAGED SECURITY SERVICES: large cloud providers can offer a standardised, open interface to managed security services providers. This creates a more open and readily available market for security services.

LOCK-IN: there is currently little on offer in the way of tools, procedures or standard data formats or services interfaces that could guarantee data, application and service portability. This can make it difficult for the customer to migrate from one provider to another or migrate data and services back to an in-house IT environment. This introduces a dependency on a particular CP for service provision, especially if data portability, as the most fundamental aspect, is not enabled..

ISOLATION FAILURE: multi-tenancy and shared resources are defining characteristics of cloud computing. This risk category covers the failure of mechanisms separating storage, memory, routing and even reputation between different tenants (e.g., so-called guest-hopping attacks). However it should be considered that attacks on resource isolation mechanisms (e.g.,. against hypervisors) are still less numerous and much more difficult for an attacker to put in practice compared to attacks on traditional OSs.

MANAGEMENT INTERFACE COMPROMISE: customer management interfaces of a public cloud provider are accessible through the Internet and mediate access to larger sets of resources (than traditional hosting providers) and therefore pose an increased risk, especially when combined with remote access and web browser vulnerabilities.

Read the original blog entry...

More Stories By Reuven Cohen

An instigator, part time provocateur, bootstrapper, amateur cloud lexicographer, and purveyor of random thoughts, 140 characters at a time.

Reuven is an early innovator in the cloud computing space as the founder of Enomaly in 2004 (Acquired by Virtustream in February 2012). Enomaly was among the first to develop a self service infrastructure as a service (IaaS) platform (ECP) circa 2005. As well as SpotCloud (2011) the first commodity style cloud computing Spot Market.

Reuven is also the co-creator of CloudCamp (100+ Cities around the Globe) CloudCamp is an unconference where early adopters of Cloud Computing technologies exchange ideas and is the largest of the ‘barcamp’ style of events.

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