Standards have become an integral part of cybersecurity and are now absolutely indispensable due to the interlinking of data, man and machines. The Internet of Things is currently all-pervasive: here, all technologies and devices must be capable of generating, processing and distributing information. All this must be done in strict compliance with data protection requirements and while ensuring that personal rights are protected. Standards provide this protection. Security standards thus create the basis for data security and data protection in the smart grid. They ensure a dedicated level of security at the technical, organizational and process-related level. This is of great importance in electric vehicles, for example, since their communication generates vast amounts of data streams in the smart grid. The same applies to the information streams in the smart home, in which all devices are networked and communicate with each other. The increased complexity of the overall system has led to greater vulnerability. The growing levels of cybercrime, for instance, have therefore rendered the great importance of cybersecurity indisputable. Secure identities are the starting point in the security chain that protects the data streams at the hardware, software and process level. Standards ensure that each machine, each piece of hardware, has its own unique identity which also meets the privacy protection requirements. Only thus can Industry 4.0, the smart home or smart traffic work. Because once an attacker succeeds in illegally assuming an identity, all the protective measures based on that identity – such as access protection – are rendered useless. To ensure that the sheer number of security solutions does not compromise system usability, the standards also ensure that the cybersecurity measures protect technologies and users from risks while leaving the IT systems themselves user-friendly.