Modernization of automated process control systems (APCS) of industrial enterprises and organizations of the non-commercial sector of the national economy is under the influence of geopolitical factors of the external environment. The transition to import substitution and technological leadership programs allowed building new approaches to the systems operation and introducing fundamentally new control models based on open protocols and interfaces. The Russian technology market is developing and demonstrates a growing need for domestically produced components and independent software. Therefore, the growing popularity of open APCS not only opens new opportunities for companies and users of such platforms, but is realized within the framework of government support of the technology industry. Nevertheless, in addition to the advantages, such models carry additional risks associated with information security of data transmitted and accumulated by the system. For this reason, it is necessary in open systems to additionally build an information security module based on the exploitation of modern technologies of protection and security against unauthorized inputs.