Big heterogeneous data and its security: A survey

From the initial forms of writing to current data centers, the human pursue has constantly collected information. Ascend in tools has led to the deluge of data, which demand more refined data storage systems. Commencement in the 1930s, this timeline covers the sudden increase of information and how Big Data has generated the necessity to manage and save information. As the swiftness of information generation increases Moore's law at the commencement of this new century, exorbitant data is making great troubles to human beings as well as the society. With the development of information digitization, massive amounts of data (structured, semi-structured, and unstructured) are generated quickly. Users store vast amount of clumsy as well as sensitive data on a big data platform. Sharing sensitive data will help organizations to reduce the cost of providing users with personalized services and provide value added data services. Issues related to data security and privacy is of cardinal concern in the age of big data as the data volume is high. The growing popularity and development of big data technologies bring serious threat to the security of individual's sensitive information. Implementing security and privacy policies is a challenge in the era of big data. Governmental agencies, healthcare industry, private organizations invest large resources into the collection, aggregation, and sharing of large amounts of personal data. However, secure data sharing is problematic.