A Novel Protection Mechanism for Critical Mission IoT in Smart Grid

As the needs of users increased, the Critical Vertical Mission (CVM) functions gradually diversified, e.g., smart grid. Traditional power grids can no longer meet the required functions. Smart grid is favored for its two-way communication of information flow and electric current with users, and it can detect grid faults more quickly and easily. More and more traditional power grids are being transformed to smart grids. However, the security problems of smart grid also emerge in an endless stream at the same time. Denial of service (DoS) attacks, side channel attacks (SCA), false data injection attacks, deception, illegal access and attack to infrastructure all threaten the stable operation of the smart grid. This paper first introduces the background and development of the smart grid security. Then we classify and expound the main security threats facing the current smart grid, and put forward the subsequent protection schemes such as firewall, intrusion detection system (IDS), access control and identity authentication. Finally, we discuss some suggestions about the network security protection after more new energy (such as wind energy, solar energy, nuclear energy) is used as power sources for comunication nodes and a large number of internet of things (IoT) equipments are connected to the CVM in the future.