As spotting of obscure data points, leading to a security incident, goes beyond human capability and as responding to the incidents quickly and accurately becomes critically important, cognitive security gains momentum. The cognitive abilities give justice to the data, which otherwise goes untapped. They sense signals sent by machines which were not factored in the process of security decision making until now, because of their sheer volume and complexity. They employ predictive technologies & natural language processing for solving the mystery behind a very specific problem. Security, because of its unique challenges, is emerging as a key area for experimentation of cognitive computing capabilities. Accumulating information, exploring them to find specific problems, getting deep insights, deducing relationships and patterns, improving learning and making defence more adaptive are becoming key characteristics of the new security paradigm. Best Practices Meet, 2017 will examine and delve into aspects, dimensions, specifics and larger phenomena emerging in cognitive computing and its relevance to security.