Manufacturing facilities rely heavily on legacy Industrial Control Systems (ICS) to maintain smooth operations. However, although reliable, these systems often lack the robust security measures necessary to defend against modern cyber threats. In this article, we will explore emerging technologies that can assist in protecting legacy ICS within the manufacturing sector. By leveraging external support, such as Managed Detection and Response (MDR) services, manufacturing companies can strengthen their networks and systems, ensuring the security of their operations against cyber threats.

The Vulnerabilities of Legacy ICS in Manufacturing

Legacy Industrial Control Systems (ICS) were developed during a time when cybersecurity threats were still in their early stages. Unfortunately, this means that these systems often lack the built-in security mechanisms that are now essential for protecting critical infrastructure. Manufacturing companies face a myriad of challenges when it comes to securing legacy ICS systems, including outdated software, unsupported hardware, and limited visibility into network traffic.

External Support for Legacy ICS Security

Exploring Innovative Solutions

To overcome these challenges, cybersecurity experts are actively developing innovative solutions that can seamlessly integrate with legacy ICS systems. These emerging technologies offer an additional layer of protection against modern cyber threats. Let’s delve into some of the most promising solutions:

  • Network Segmentation: By dividing the network into isolated segments, manufacturers can contain potential threats and limit their impact. This approach prevents lateral movement within the network, making it more difficult for cyber attackers to infiltrate critical systems.
  • Intrusion Detection Systems (IDS): IDS monitors network traffic, analyzing patterns and signatures to identify potential threats. By detecting anomalies and known attack vectors, IDS acts as a virtual sentry, alerting IT personnel to potential breaches and enabling them to respond swiftly.
  • Security Information and Event Management (SIEM): SIEM solutions provide real-time monitoring and analysis of security events. By aggregating data from various sources, SIEM enables proactive threat detection, incident response, and compliance management, ensuring continuous monitoring and protection of legacy ICS systems.
  • Threat Intelligence Platforms: Leveraging threat intelligence platforms, manufacturing companies gain access to up-to-date information on emerging threats and vulnerabilities. This knowledge empowers organizations to proactively identify and mitigate risks, enhancing the overall security posture of their legacy ICS systems.
Legacy ICS Security

Building a Resilient Future: Strategies for Long-Term Legacy ICS Security in Manufacturing

While incorporating emerging technologies is essential, establishing a resilient future demands a comprehensive approach to legacy ICS security. Here are several strategies that manufacturing companies can implement:

  • Regular Risk Assessments: To ensure the long-term security of legacy systems, conducting regular risk assessments is vital. These assessments involve thoroughly evaluating the network infrastructure, software, and hardware to identify potential vulnerabilities and entry points for cyber threats. By regularly assessing risks, manufacturing companies can proactively address security gaps and implement appropriate measures to mitigate potential risks.
  • Secure Remote Access: Implementing secure remote access protocols is crucial for protecting legacy ICS systems. Manufacturing companies should consider utilizing virtual private networks (VPNs), multi-factor authentication (MFA), and strict access controls. These measures guarantee that only authorized personnel can connect remotely to critical systems. By enforcing such protocols, organizations can minimize the risk of unauthorized access and strengthen the overall security posture of their legacy ICS infrastructure.
  • Continuous Monitoring and Response: Implementing Managed Detection and Response (MDR) services empowers manufacturing companies to outsource the round-the-clock monitoring of their networks and systems to cybersecurity experts. MDR integrates cutting-edge threat detection technologies with human expertise, delivering real-time visibility, swift incident response, and proactive threat hunting. By leveraging MDR, organizations can enhance their ability to detect and mitigate cyber threats effectively, ensuring the continued protection of their legacy ICS infrastructure.
  • Regular Patching and Updates: Staying vigilant with software updates and security patches for legacy systems is crucial. While it may demand extra effort and coordination, keeping software up to date is essential for minimizing vulnerabilities and protecting against known threats. By diligently applying patches and updates, manufacturing companies can significantly reduce the risk of exploitation and enhance the overall security posture of their legacy systems.

The Definite Blueprint for Cybersecurity in Manufacturing [FREE E-BOOK]

We have developed this valuable resource to assist IT Directors in manufacturing companies in their mission to safeguard their legacy ICS systems.

Inside this e-book, you will find invaluable insights into understanding cybersecurity threats specific to the manufacturing industry. It covers various essential topics, including identifying and assessing cybersecurity risks, developing a robust cybersecurity strategy, protecting your manufacturing company’s infrastructure, and responding to cybersecurity incidents effectively.

By leveraging the knowledge contained within this e-book, IT Directors can empower their teams to implement effective cybersecurity measures and fortify their legacy ICS systems. Take advantage of this opportunity to enhance your company’s security posture and safeguard your manufacturing operations.


Rhyno delivers a range of activities that combine to fully protect your infrastructure and data from cybercriminals, anywhere and everywhere, 24/7/365.


About Rhyno Cybersecurity Services

Rhyno Cybersecurity is a Canadian-based company focusing on 24/7 Managed Detection and Response, Penetration Testing, Enterprise Cloud, and Cybersecurity Solutions for small and midsize businesses.

Our products and services are robust, innovative, and cost-effective. Underpinned by our 24x7x365 Security Operations Centre (SOC), our experts ensure you have access to cybersecurity expertise when you need it the most.

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