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(1) Presentation(s)


Lun. 11/03/2019 11:00 K71, Bâtiment K, RdC

EL NAGGER Raouia (Université d’Alger)
Security in cloud computing: issues and challenges


As a new paradigm, cloud computing is reshaping the entire information technology industry. Cloud computing relies on a distributed infrastructure of heterogeneous resources provided to end-users as services through a virtualized layer. According to U.S. National Institute of Standards and Technology (NIST), Cloud computing can be defined as follow: “Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction”. This flexible nature has attracted more and more attention of small and medium organizations. In fact, cloud consumers known as tenants have to pay only for consumed resources which decreases dramatically the cost. Nevertheless, due to the distributed and shared architecture, cloud computing environment suffers from several security issues that inhibit its proliferation.

Economic Denial of Service (EDoS) attack is one of the most harmful attacks that treats the cloud computing. Traditional Distributed Denial of Service (DDoS) attacks target the service availability. By overwhelming the victim server with countless requests, the server exhausts its resources and becomes unreachable for legitimate users. However, in Cloud environment, disturbing a service is not such an easy task due to its capability of auto-scaling and service level agreements (SLA). Thus, malicious users strain their purpose and design a new breed of DDoS attacks called EDoS attacks. Economic Denial of Sustainability (EDoS) is a steady and slow attack that take advantage of the elasticity of the cloud. Attackers mimic legitimate behavior by sending a bogus of well-crafted requests to cause a dynamic scale of resources to meet the demand. If the attack spans for a long period, it causes a hefty bill for the customer and in some cases bankruptcy. Thus, the need to design a sophisticate security solution that can distinguish EDoS traffic form legitimate one.

Pour plus d'informations, merci de contacter Cugliari J.