Electricity is an integral part of all modern economies, supporting a range of critical services including health care, the internet and transportation. The secure supply of electricity is thus of paramount importance. Digitalisation is rapidly transforming the electricity system, bringing many benefits for businesses and consumers. At the same time, increased connectivity and automation could raise risks to cybersecurity and the threat of cyberattacks. A successful cyberattack could trigger the loss of control over devices and processes in electricity systems, in turn causing physical damage and widespread service disruption. Using real-world examples, this report offers guidance to policy makers, electric utilities and other stakeholders on how policies and actions could enhance the cyber resilience of electricity systems.