6. Big data security issues with challenges and solutions

: Big data is a collection of huge sets of data with different categories where it could be distinguished as structured and unstructured data. As we are revolutioniz-ing to zeta bytes from Giga/tera/peta/exabytes in this phase of computing, the threats have also increased in parallel. Besides big organizations, cost reduction is the criterion for the use of small- and medium-sized organizations too, thereby increasing the security threat. Checking of the streaming data once is not the solution as security breaches cannot be understood. The data stack up within the clouds is not the only preference as big data technology is available for dispensation of both structured and unstructured data. Nowadays, an enormous quantity of data is provoked by mobile phones (smart-phone) or equally the symphony form. Big data architecture is comprehended among the mobile cloud designed for supreme consumption. The best ever implementation is able to be conked out realistically to make use of a novel data-centric architecture of MapReduce technology, while Hadoop distributed file system also acts with immense liability in using data with divergent arrangement. As time approaches, the level of information and data engendered from different sources enhanced and faster execution is the claim for the same. In this chapter our aim is to find out big data security that is vulnerable and also to find out the best possible solutions for them. We consider that this attempt will dislodge a stride for-ward along the way to an improved evolution in secure propinquity to opportunity.