ONLINE TRUST MANAGEMENT TO PREVENT COLLUSION ATTACK AND SYBIL ATTACK

COMPUTER SCIENCE AND ENGINEERING

Cloud consumer’s feedback is an important source to assess the overall trustworthiness of cloud services. It helps in improving trust management in cloud environments by proposing different ways to ensure the correctness of trust feedbacks. Credibility model is used for identify the misleading trust feedbacks from malicious user by filtering Collusion and Sybil attacks however these attacks may place in a long or short period of time. Cloud service providers advertise their cloud services in website. Thus the cloud consumer can interact with the provider through this and they can access the service they want. While the user who is new to the cloud service wants to have a review before registration, they can review the service by checking the comments of the old consumers who is already using the service. But the reviews or comment is not only given by the true user but also by the malicious user who gives comments without the experience of the cloud service. To avoid this we use the Trust Management Service by which the collusion and Sybil attacks are prevented by filtering the misleading feedbacks from malicious user.

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