Key words: industrial control system; Information security; Problem risk; Defense system

Introduction of industrial control system
IS220UCSAH1A Industrial control system is composed of various components, some components are automatic, some are able to carry out process monitoring, two components constitute the main body of the industrial control system. The main purpose of this system is to realize the acquisition of data and monitor the industrial production process in the first time. As shown in the figure, it is mainly divided into control center, communication network and controller group。

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IS220UCSAH1A Industrial control system mainly includes process control, data acquisition system (SCADA), distributed control system (DCS), program logic control (PLC) and other control systems. All the time, these systems have been applied in different industrial fields, and have become one of the indispensable components in the construction of national key infrastructure projects. In all industrial control systems, the industrial control process includes the control loop, human-computer interaction interface (HMI), and remote diagnosis and maintenance components. The figure above shows a typical ICS control process.

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Second, analysis of the safety status of industrial control system

IS220UCSAH1A With the combination of computer technology and Industrial production, Industrial Control Systems (ICS) has become the cornerstone of manufacturing, power and transportation industries. On the one hand, the industrial control system for the development of industry has brought a huge positive role, on the other hand, because of the industrial control system of the security system to do is not very in place, a lot of illegal invasion events are common, which is the development of the industry, and even the security strategy of the whole country put forward a challenge. Especially in 2010 Stuxnet virus raging, let the world understand, people have been considered relatively safe industrial control system has become the target of hackers, therefore, in the first time to discover the security problems of industrial control system, and timely solve these security problems is extremely important. In addition, the construction of a safe and credible industrial control and defense system is also an important part of the development and construction of various countries.

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Three, the existing problems of industrial control system

3.1 Internal Risks: The operating system has security vulnerabilities. Because the industrial control software is designed first, then the operating system will find the vulnerability to repair, even the vast majority of the industrial control system used by the Windows XP system producer Microsoft company stated that: after April 8, the XP system security vulnerability will not be repaired, so the outbreak of industrial control system virus will be more frequent, Make the industrial control system more dangerous.

IS220UCSAH1A No problem with anti-virus software. The industrial control system using Windows operating system is based on the compatibility of industrial control software and anti-virus software. Generally, anti-virus software will not be installed, leaving space for the spread and spread of viruses.

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