Cyber security has become a critical priority for electric utilities, which are increasingly dependent on information technology and telecommunication infrastructure to ensure the reliability and security of the electric grid. Additionally, rapid, disruptive changes are happening in electric grids around the world. In many states and countries, initiatives are underway to integrate small, renewable generation into the distribution grid, to meet the local demand for electricity, while reducing the dependency on large, central generation facilities and long-distance transmission. This transition requires new technologies, connectivity, and intelligence, which inherently changes the attack surface of the grid and introduces new stakeholders in the delivery and use of power. This talk provides an introduction to these new cyber security issues, discusses EPRI's approach to addressing the challenges, and presents future research opportunities.