As a TSO, the company manages the flow of electricity over more than 70,000-kms of high-voltage line, which requires a high degree of standardization in the operation of the network’s substations. As the previous standardization was already more than 10 years old, it was mandatory to update it with the latest cybersecurity features to protect the electrical grid. To ensure security, customer was already using user account management, audit trail, security logging (syslog) and https support. The most important extensions to enhance security were to implement IEC 60870-5-104 secure communication based on the IEC 62351-3 standard and Simple Network Management Protocol version 3 (SNMPv3), which provides advanced new security features.

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