CHAPTER 25 Security and Privacy in the Smart Grid ´ Alvaro A. C ardenas, Reihaneh Safavi-Naini 25.1. INTRODUCTION Smart grid refers to multiple efforts around the globe to modernize aging power grid infrastruc- smart meters, may be exploited by the attackers resulting in major security risks to the system. A very important security challenge stems from the fact that smart grid is a cyber-physical sys-