Technical security is a broad and diverse term and concept. Understanding and implementing it in today's organisational security environment is essential to the continuity of business operations for companies of all sizes. It is also a critical component of comprehensive corporate information security.
In this article, we open up this broad topic and look at its relevance, benefits and implementation in the OT network of a manufacturing company.
Definition of technical security
Technical security refers to the processes and technologies used to protect information systems, networks and devices from threats, damage and unauthorised access. Its purpose is to safeguard the confidentiality, integrity and availability of sensitive information.
Technical security involves a number of different techniques and mechanisms, such as encryption, authentication and authorisation systems, firewalls, IDS/IPS (Intrusion Detection System / Intrusion Prevention System) and security updates.
What does technical security consist of?
Technical security consists of many elements, which can be divided into three main categories:
- hardware
- software
- policies
Hardware refers to the physical devices that protect the system, such as firewalls, devices using encryption algorithms and biometric identification devices. Check out the firewall service provided by Save LAN.
Software in turn, contains various applications and systems that protect the information system. This can include anti-virus software, anti-spyware detection software and anti-malware software.
Policies i.e. administrative data security are internal guidelines and rules that define how technology is used and how security is maintained.
Why is technical security important?
Technical security is important for all businesses, as security threats have exploded in recent years and are becoming increasingly complex and sophisticated. I cannot overstate the importance of technical security.
Data breaches can cause significant financial losses, reputational damage and even business interruption. In addition, companies can be held liable if their customers' data or employees' personal information falls into the wrong hands.
What are the benefits for your company of strengthening your technical security?
Strengthening technical security also brings a number of benefits. Firstly, it protects sensitive company information, including trade secrets, personal data and financial information.
It also increases the reputation and trust of the company in the eyes of stakeholders such as customers, partners and investors. This is particularly important at a time when privacy and data protection issues are at the centre of public debate.
In addition, technical security improves operational efficiency and business continuity, for example by reducing disruption and interruptions caused by security breaches.
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How is technical security implemented in a production company's OT network?
In a manufacturing company's OT network, also known as a process network, implementing technical security is a complex process. It always starts with a common definition of the company's security objectives and strategy.
Once a security strategy is in place, the right tools and techniques are needed, including firewalls, intrusion detection and prevention systems, and encryption and authentication techniques.
Here are five of the most important security baskets for technical security
- Network segmentation
- OT-network duplexing solutions
- Securing external field connections (VPN)
- Security training and briefings
- Continuous monitoring and observation of events
01. OT network segmentation
In practice, the first step is to check that the OT network is sufficiently segmented, i.e. broken down by service category. This is also influenced by the services provided by the network. In this case, for example, a SCADA (Supervisory Control and Data Acquisition System) can be separated from the process in its own network.
Process network devices such as RTU (Remote Terminal Unit), PLC (Programmable Logic Controller) or sub-item equipment. Those introduced in recent decades, also known as legacy devices, do not necessarily support the new security features. Critical devices can be isolated from the process network, for example by a protocol converter or a firewall.
02. OT-network duplexing solutions
It is a good idea to design the connections in the process network in such a way that they also take into account duplicate connections. Previously, physical connections were recommended. These are now being replaced by wireless radio technology, for example using free-frequency radio links. Today, 4G/LTE-based backup connections are also favoured.
03. OT-net VPN remote connections
Connections from the field to the OT network are often critical. VPN (Virtual Private Network) technology can be used to ensure the security of these connections. This can ensure that the data transmitted from the field to the SCADA system is secured and encrypted.
04. Training and information sessions
One important part of this process is training employees. Technical security is not only a technology issue, but also a human behaviour issue. All employees need to understand their role in maintaining security and following security procedures.
05. Event and security monitoring
Last but not least, it is important to ensure that your company is constantly on the lookout for new threats and updates its security plans accordingly.
"Information security is an ongoing process, not a one-off project"
Threats can also be monitored centrally. This is usually referred to as an IDS, or attack detection system. The IDS system monitors the state of the network and alerts on anomalies.
Security exceptions on the external network can also be centrally controlled. In this case, the service automatically and regularly scans for threats visible on the external network.
Contact us and we will clarify the security of your process network!
Areas of technical information security
The three key elements of technical security are the management of workstations, servers and network security. Together, these form a set of elements that help to achieve the overall security objectives.
Security of terminal equipment (workstations)
For the operation of workstations or terminals, identification and authentication are essential functions. Access rights and their management are essential elements in today's work environment, enabling effective security management. Access rights management allows users to control their activities on the system in accordance with the general security principles.
Security management of workstations is also often done programmatically. Anti-virus and anti-virus software is commonly used. In addition, BitLocker disk encryption software is used on Windows workstations, for example, to maintain the confidentiality of device data in many situations. High security companies can also make use of a VPN connection that is always on.
Save LAN also delivers high security services to end devices. Contact us!
Server security
In addition to user identification and authentication, server management is important for data storage, backup and system maintenance in many situations. These measures prevent data loss or destruction under unexpected circ*mstances. They are also essential to ensure continuity of service. Restricting network access and security auditing of servers are ways to minimise internal and external security threats, such as security breaches.
The security of servers can also be improved by whitelisting. This means that each program that is run is signed with a specific certificate, if this is missing, the program cannot be started.
Ask us for more information about Save LAN security services.
Network security
Network security includes firewalls, routers, switches, network management and troubleshooting. Active network devices, such as firewalls, are key security hardware. Firewalls can now be used not only for packet filtering, but also for securing servers. Other key firewall measures include connections from outside the user's network.
Nowadays, the switches usually act as additional ports on firewalls. This means that when multiple networks and services are connected to a switch, the traffic between them passes through the firewall, i.e. the firewall also acts as a static router.
Network management and troubleshooting are an essential part of equipment maintenance. The provision of these services can be outsourced, allowing the company to focus on its core business.
Save LAN offers modern and easy-to-use implementation options! Contact us!
Conclusions
When we talk about technical security, we are talking about data protection, which has become an indispensable fundamental of modern business. Technical security is not just about technology, it is a holistic approach that brings together people, processes and technology to achieve a common goal.
Maintaining data security is essential for the financial well-being, reputation and customer confidence of your business. The importance of technical security is clear: it is no longer just the responsibility of a company's IT department, but has become a core business function.
It is clear that security threats and risks are constantly changing and evolving. Therefore, security has become an ongoing process that requires constant vigilance, updates and improvements. It requires the involvement of all departments in the company - from management to employees. Everyone needs to understand their role in maintaining security.
Ultimately, security must be understood as an investment. Its purpose is not only to minimise risk and damage, but also to protect and enhance business value. Technical security is an investment that pays for itself by reducing the cost of security threats, improving business efficiency and increasing trust among a company's stakeholders.
More reading on the subject:
After technical security, it is natural to look at another equally important aspect of security, physical security. It focuses on the physical protection of a company's hardware, systems and premises. Physical security prevents unauthorised access to premises and equipment. This includes locking systems, surveillance cameras, security guards and also the proper location and storage of information systems. Implementing physical security alongside technical security is a fundamental step in keeping a company's information assets in the right hands.
Read the separate article: What is physical security?
