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Abstract
Privacy-preserving High-order PPHOP c-Means Scheme that allows support for all users to conveniently access data over the cloud and control and detect the inside threat attack. Data owner is not able to control all over their data and security issues. The new security issues of Insider Threat Attack Various techniques are available to support user privacy and secure data sharing and detect of control the Insider Threat attack. An insider threat was the misuse of information through malicious intent, accidents or malware. The study also examined four best practices companies could follow to implement a secure strategy, such as business partnerships, prioritizing initiatives, controlling access, and implementing technology. This paper focus on various schemes to deal with secure data sharing such as Data sharing with forward security, secure data sharing for dynamic groups, Attribute based data sharing, encrypted data sharing and Shared Authority Based Privacy-preserving Highorder PPHOP c-Means Scheme for access control of outsourced data. In this paper improve the could security issuses and inside threat attack.