Cyber security deployment first focused on being compliant to standards and regulations. This approach has been very beneficial for the entire industry because it has increased the level of awareness about cyber security even if it may have led to oversimplifications (such as focusing on transmission only, removing serial communications, defining security perimeters etc.). As the electrical grid is getting more and more complex with distributed energy resources (DER) integration and feeder automation, a new approach is required more oriented towards risk management. As an example, the same type of substation can feed a residential area or a critical infrastructure, with significantly different impacts in the case of an attack. The deployment of the cyber security in this context leads to a different approach. One of them is the deployment of cyber security in depth. This also implies a change in the traditional boundaries like substation fences integrating DER, prosumers etc. This study describes the new trends introduced in the latest standards and provides an approach for deploying security in depth and improving the security of the grid.