On September 19, 2022, the XCon2022 Security Focus Information Security Technology Summit was successfully held in Beijing. More than 10 technical experts, heads of security departments, and front-line security experts from well-known domestic network security enterprises shared in-depth topics at the meeting, and Ma Shaoshuai, director of the security technology laboratory of Ningbo Hollysys Information Security Research Institute Co., Ltd., and Liu Hanzhe, information security technology researcher, delivered a keynote speech on "Spies Hidden in Industrial Control Systems".
Founded in 2002, XFocus Information Security Conference is one of the most well-known, authoritative and large-scale information security conferences in China, and has a certain influence in the world. XCon Conference continues to be committed to creating an atmosphere for domestic security technology exchange and building a bond for international technology exchange and cooperation. Since its establishment 20 years ago, it has attracted more than 200 global security technology experts to give speeches here.
Industrial automation control systems are increasingly used in thermal power, petrochemical, gas, new energy, rail transit and other industries, as part of the national important infrastructure, its safety has also been more widely concerned. Over the past few years, attacks against industrial automation control systems have been on the rise. Through the investigation, it is found that most of the operating systems of the engineer station and operator station in the industrial control system are Windows Win7, Win XP and even Win 2000 version, and there are a large number of high-risk remote exploitable vulnerabilities.
In the topic of "Spies Hidden in Industrial Control Systems", Hollysys proposed a method to attack the host computer through the underlying PLC and other control equipment. Contrary to the conventional penetration test, the host computer is attacked through the underlying PLC, and the shell bounces back to the attacker's host by bypassing protective devices such as firewalls and network gates. When the attacker obtains the permissions of the engineer station, operator station and other upper computers, they can take deeper attacks on the industrial control system more flexibly and targetedly. Finally, security experts from Hollysys proposed a solution to the attack from two dimensions: control equipment manufacturers and control device users.
By sharing the latest research results at the XCon2022 Security Focus Information Security Technology Summit, Hollysys demonstrated its technical strength in conducting security research in the field of industrial control security, and received wide attention and recognition from industry insiders. With the independent, controllable, safe and credible new generation of active immune industrial control system as the core, combined with multi-dimensional security protection technology, Hollysys Information Security Research Institute will continue to provide users with professional product technology and overall solution support for building a comprehensive information security protection system.
|
More on that
|
Hollysys PLC - what are the application fields of PLC
1. Logic control of switching quantity
This is the most basic and most extensive application field of PLC, which replaces the traditional relay circuit to achieve logic control and sequence control, which can be used for the control of a single device, as well as for multi-machine group control and automatic assembly line. Such as injection molding machines, printing machines, ...
|
|
Hollysys successfully signed the first 100 billion cubic meter gas field project in Bohai Bay to help achieve the "double carbon" goal
Recently, Hangzhou Hollysys Automation Co., Ltd. successfully signed the first 100 billion cubic meters of gas field project in Bohai Bay (1) - CNOOC Tianjin Branch Bozhong 19-6 condensate gas field phase I development project (hereinafter referred to as: Bozhong 19-6 project), and will provide PCS (DCS), ESD, FGS, ...
|
|
Hollysys DCS - Introduction to the main features of DCS
(1) High reliability
DCS is designed to be fault-tolerant, so that when a computer fails, it does not cause the system to lose other functions. In addition, because the tasks undertaken by the individual computers in the system are relatively simple, it is possible to adopt a specific structure and ...
|
|
Hollysys DCS - Introduction to DCS grounding classification
In general, DCS control systems require two types of grounding: protective ground and working ground (logical, shielded, etc.). For systems equipped with safety barrier explosion protection measures, such as those used in the chemical industry, intrinsically safe premises are also required.
2.1 Protected areas (CG, Cabinet Grounding...)
|
|
Hollysys PLC - the top ten comprehensive failure causes of PLC
1. Grounding problems
The grounding requirements of the PLC system are relatively strict, and it is best to have an independent dedicated grounding system, and it should also be noted that other equipment related to PLC should also be reliably grounded.
When multiple circuit grounding points are connected together, unexpected currents can be generated, resulting in logic errors or ...
|
|
Hollysys PLC - Calculation of the amount of pulses in PLC
The control of pulse amount is mostly used for angle control, distance control, position control and so on of stepper motor and servo motor. The following is an example of a stepper motor to illustrate each control mode.
1. Angle control of stepper motor. First of all, it is necessary to clarify the number of subdivisions of the stepper motor, and then determine the stepper ...
|
|
The characteristics of Hollysys LK series PLC are introduced in detail
LK is a programmable controller (PLC) product launched by Hollysys for medium and high-performance control fields. It fully integrates the advantages of DCS and PLC, adopts high-performance analog processing technology, miniaturized structural design, open industry standards, and a universal system platform, so that ...
|
|
Steps on how Hollysys DCS works on a computer
1. Confirm that the new computer has relevant interfaces and can be used normally, and Hollysys DCS software can run on the computer operating system
2. Device and Lisi DCS software, dongle, and related drivers (mainly redundant network cards, data hard disks, etc.)
3. Set up ...
|
|
Hollysys DCS - DCS daily maintenance and fault analysis and troubleshooting methods
01. Power supply
The DCS power supply system is mostly a "dual backup hot redundant power supply", and the prevention and control of power failures is mainly reflected in the inspection and daily maintenance.
Generally speaking, as long as the unit is normal ...
|
|
Bureau Veritas signed a strategic cooperation agreement with Hollysys Group and issued a ball valve functional safety certificate to it
Recently, the signing ceremony of the strategic cooperation between Bureau Veritas and Hollysys and the functional safety certification ceremony of Hollysys valves were held in the Hangzhou base of Hollysys. Mr. Ye Jiong, General Manager of Bureau Veritas Technology Center, Mr. Zhong Aimin, Director of Product Certification Center, Mr. Yang Yang, Sales Director of Eastern Region, and Mr. Yang Yang, Director of Functional Safety ...
|
|
Hollysys PLC - Introduction to the functions and application fields of PLC
1. The function of PLC
PLC is a general industrial automatic control device with microprocessor as the core, integrating computer technology, automatic control technology and communication technology, which has high reliability, small size, strong function, simple program design, flexible and universal and maintenance methods.
|
|
Hollysys PLC - PLC should be noted in operation (three, four, five)
3. Main anti-interference measures
(1) Reasonable treatment of power supply to suppress the interference introduced by the power grid
For grid disturbances introduced by the power supply, an isolation transformer with a shielded ratio of 1:1 can be installed to reduce the interference between the equipment and the ground.
|
|
Hollysys PLC - a component of the PLC control cabinet
1. Open empty
A master air switch that is the power control for the entire cabinet.
2. Power supply
A 24VDC switching power supply.
3、PLC
This should be chosen according to the needs of the project. If the scale of the project is small, the integrated PLC can be used directly; If the item ...
|
|
Hollysys DCS - What are the characteristics of DCS?
1. High reliability
Because DCS disperses the system control function on each computer, and the system structure adopts a fault-tolerant design, the failure of one computer will not lead to the loss of other functions of the system. In addition, due to the fact that the tasks undertaken by the various computers in the system are comparatively ...
|
|
Hollysys DCS - DCS system operation problem analysis and preventive measures
1. Communication network failure: communication network faults are generally easy to occur at the contact bus and local bus, or caused by wrong address identification.
2. Node bus failure: The transmission medium of the node bus is generally coaxial cable, some use token signal transmission mode, and some use ...
|
|
Hollysys DCS - the debugging scheme of DCS system
1. Check before power-on
If the cable insulation resistance meets the requirements (greater than 5M ohms), check the cable insulation resistance test record, and spot check the actual measurement if necessary.
Check that all power cables, signal cables, and communication buses should be connected.
Control stations, operator stations, engineer stations, etc.
|
|
Hollysys went to Shaanxi Traffic Control Group for a discussion and exchange
In order to further strengthen the comprehensive cooperation with Shaanxi Traffic Control Group, on August 11, 2022, Xu Yue, Chairman and Co-President of Hollysys Group, visited Zhang Wenqi, Secretary of the Party Committee and Chairman of Shaanxi Traffic Control Group, and the two sides conducted in-depth exchanges and cooperation on topics such as business ecology and smart highways.
|
|
Hollysys PLC - Introduction to the composition of PLC control cabinet
1. Open empty
A master air switch that is the power control for the entire cabinet.
2. Power supply
A 24VDC switching power supply.
3、PLC
This should be chosen according to the needs of the project. If the scale of the project is small, the integrated PLC can be used directly; If the item ...
|
|
Analysis of common problems of Hollysys DCS system
1. What is a communication protocol?
A communication protocol is an agreement between two parties to a communication. The agreement includes uniform provisions on data format, synchronization mode, transmission speed, transmission steps, error detection and correction mode, and control character definition, etc., which must be complied with by both parties to the communication. Therefore...
|
|
HollySys PLC - What are the design requirements that need to be met for PLC programs?
Simplicity
Make the PLC program as simple as possible. Simplicity means using a standardized procedural framework as much as possible and using simple instructions as much as possible.
If you want the program to be simple, in a big way, you should optimize the program structure, simplify the program with process control instructions, and ...
|
|