Security event log message conversion and security event in process control

A method of managing security event in a system of Process Control, PC, said PC system a system Substation Automation SA for a substation of an electric power system, with a communication network (15) interconnecting devices PC system (10, 11; 12; 151, 152; 20), wherein a first and second system devices PC transmitted in the communication network, messages security events comprising event information security according to a first and second protocols, respectively, the first and second protocols one and the other of a protocol of the International Electrotechnical Committee, IEC 61850-7-4 and Syslog protocol, the method comprising - receiving a first security event message according to the first protocol, and extract information security event of the first message, and - assign information security events to be extracted Gundo protocol.