Smart grid cyber security involves protection against serious cyber threats that affect the users of smart grid technology globally. Security of the smart grid network has been an area of concern for the power utility sector, given the frequent exchange of sensitive information that takes place via communication networks such as the internet, intranets, corporate networks, and extranets. The power utility sector needs various controlling techniques to moderate the adverse effects of unauthorized access of smart grid data. For instance, hackers could assume control of smart grid applications and servers and access confidential information. Hence, the smart grids require security measures that not only administer these systems and equipment efficiently but also ensure a secure exchange of information between these systems.