ICS Security for Legacy Systems
Upgrade Without Downtime
The Challenge of Securing Legacy ICS Systems
In the heart of manufacturing plants, oil and gas facilities, and energy grids, Industrial Control Systems (ICS) power critical operations. Many of these systems, however, rely on legacy technology, decades-old equipment designed for reliability, not cybersecurity. As Operational Technology (OT) environments become more connected to IT networks and IoT devices, these legacy systems are increasingly vulnerable to sophisticated cyber threats. Recent data indicates that over 60% of industrial organizations experienced a cyber incident in 2024, with legacy systems being a primary target due to unpatched vulnerabilities and outdated protocols.
Securing legacy ICS systems is a unique challenge. Replacing them entirely is often cost-prohibitive and risks operational downtime, while leaving them unprotected invites catastrophic breaches that can halt production, compromise safety, or incur millions in losses. The solution lies in strategic upgrades that enhance security without disrupting operations. Shieldworkz is dedicated to helping industrial leaders in manufacturing, oil and gas, and energy sectors protect their legacy systems with practical, downtime-free strategies. Our guide, ICS Security for Legacy Systems, Upgrade Without Downtime, equips decision-makers with the tools to safeguard critical infrastructure in 2025 and beyond.
Why Focus on Legacy ICS Security?
Legacy ICS systems, such as SCADA, PLCs, and DCS, were built for isolated environments, lacking modern cybersecurity features like encryption or robust access controls. As industrial operations embrace digital transformation, these systems are exposed to new risks, including ransomware, insider threats, and supply chain attacks. Securing them is critical for several reasons:
Protect Operational Continuity: A breach in a legacy system can halt production lines, disrupt energy supply, or endanger worker safety, leading to significant financial and reputational damage.
Address Evolving Threats: Cyberattacks targeting OT systems have surged, with 2024 seeing a 140% increase in incidents exploiting legacy vulnerabilities.
Meet Compliance Requirements: Regulations like CISA’s Cross-Sector Cybersecurity Performance Goals (CPGs) and ISA/IEC 62443 demand robust security for all ICS assets, including legacy systems.
Extend System Lifespan: Upgrading security allows organizations to maximize the value of existing infrastructure without costly replacements.
By prioritizing legacy ICS security, organizations can maintain operational efficiency, ensure compliance, and build resilience against today’s cyber threats.
Why Download Shieldworkz Legacy ICS Security Guide?
Shieldworkz ICS Security for Legacy Systems, Upgrade Without Downtime is a comprehensive resource tailored for decision-makers in manufacturing, oil and gas, and energy sectors. Crafted by OT cybersecurity experts, this guide offers practical strategies to secure legacy systems while keeping operations running smoothly. Here’s why it’s essential:
Downtime-Free Solutions: Learn proven methods to enhance security without interrupting critical processes, ensuring business continuity.
Industry-Specific Strategies: Tailored recommendations address the unique challenges of legacy systems in industrial environments, from refineries to power plants.
Aligned with 2025 Standards: Incorporates the latest CISA guidelines, NIST CSF, and ISA/IEC 62443 standards, ensuring compliance and relevance.
Expert Insights: Built on decades of experience in OT/ICS cybersecurity, providing actionable advice you can trust.
Download our guide to gain the knowledge and tools needed to protect your legacy ICS systems and strengthen your cybersecurity posture.
Key Takeaways from the Guide
Our ICS security for Legacy systems guide delivers actionable insights to help you secure your infrastructure without disruption. Here’s what you’ll learn:
Assess Legacy Vulnerabilities: Identify weaknesses in your ICS systems, including outdated protocols, unpatched software, and weak access controls.
Implement Non-Invasive Upgrades: Discover techniques like network segmentation, intrusion detection, and endpoint hardening to secure systems without downtime.
Leverage Modern Security Tools: Learn how to integrate advanced monitoring and encryption solutions with legacy infrastructure for robust protection.
Ensure Regulatory Compliance: Align with CISA, NIST, and ISA/IEC 62443 standards to meet compliance requirements and avoid penalties.
Plan for Long-Term Resilience: Adopt strategies to future-proof your ICS environment, including secure-by-design principles for new deployments.
These takeaways empower you to protect your legacy systems, maintain compliance, and ensure operational reliability in a dynamic threat landscape.
How Shieldworkz Supports Your Legacy ICS Security
Shieldworkz is committed to helping industrial leaders secure their OT/ICS environments with tailored solutions and expertise. We understand the complexities of legacy systems and the need for seamless security upgrades. Here’s how we support you:
Specialized Consulting: Our OT cybersecurity experts provide customized guidance to assess and secure your legacy systems without disrupting operations.
Advanced Protection Tools: Deploy cutting-edge solutions for real-time threat detection, anomaly monitoring, and secure system integration.
Targeted Training Programs: Equip your team with the skills to manage and secure legacy ICS systems through industry-specific training.
Sustainable Security Strategies: We help you build a long-term cybersecurity roadmap that balances legacy protection with modern innovation.
With Shieldworkz as your partner, you’ll secure your legacy systems while maintaining operational efficiency and regulatory compliance.
Who Should Download?
This guide is designed for:
Chief Information Security Officers (CISOs)
OT/ICS Managers
Plant and Operations Directors
Compliance and Risk Officers
Ready to Secure Your Manufacturing Operations?
Download our ICS Security for Legacy Systems, Upgrade Without Downtime guide now and take control of your cybersecurity future. Ensure operational continuity and compliance with Shieldworkz.
Fill out the form below to access your free guide and partner with Shieldworkz to secure your legacy ICS systems without downtime.
Download your copy today!
The Challenge of Securing Legacy ICS Systems
In the heart of manufacturing plants, oil and gas facilities, and energy grids, Industrial Control Systems (ICS) power critical operations. Many of these systems, however, rely on legacy technology, decades-old equipment designed for reliability, not cybersecurity. As Operational Technology (OT) environments become more connected to IT networks and IoT devices, these legacy systems are increasingly vulnerable to sophisticated cyber threats. Recent data indicates that over 60% of industrial organizations experienced a cyber incident in 2024, with legacy systems being a primary target due to unpatched vulnerabilities and outdated protocols.
Securing legacy ICS systems is a unique challenge. Replacing them entirely is often cost-prohibitive and risks operational downtime, while leaving them unprotected invites catastrophic breaches that can halt production, compromise safety, or incur millions in losses. The solution lies in strategic upgrades that enhance security without disrupting operations. Shieldworkz is dedicated to helping industrial leaders in manufacturing, oil and gas, and energy sectors protect their legacy systems with practical, downtime-free strategies. Our guide, ICS Security for Legacy Systems, Upgrade Without Downtime, equips decision-makers with the tools to safeguard critical infrastructure in 2025 and beyond.
Why Focus on Legacy ICS Security?
Legacy ICS systems, such as SCADA, PLCs, and DCS, were built for isolated environments, lacking modern cybersecurity features like encryption or robust access controls. As industrial operations embrace digital transformation, these systems are exposed to new risks, including ransomware, insider threats, and supply chain attacks. Securing them is critical for several reasons:
Protect Operational Continuity: A breach in a legacy system can halt production lines, disrupt energy supply, or endanger worker safety, leading to significant financial and reputational damage.
Address Evolving Threats: Cyberattacks targeting OT systems have surged, with 2024 seeing a 140% increase in incidents exploiting legacy vulnerabilities.
Meet Compliance Requirements: Regulations like CISA’s Cross-Sector Cybersecurity Performance Goals (CPGs) and ISA/IEC 62443 demand robust security for all ICS assets, including legacy systems.
Extend System Lifespan: Upgrading security allows organizations to maximize the value of existing infrastructure without costly replacements.
By prioritizing legacy ICS security, organizations can maintain operational efficiency, ensure compliance, and build resilience against today’s cyber threats.
Why Download Shieldworkz Legacy ICS Security Guide?
Shieldworkz ICS Security for Legacy Systems, Upgrade Without Downtime is a comprehensive resource tailored for decision-makers in manufacturing, oil and gas, and energy sectors. Crafted by OT cybersecurity experts, this guide offers practical strategies to secure legacy systems while keeping operations running smoothly. Here’s why it’s essential:
Downtime-Free Solutions: Learn proven methods to enhance security without interrupting critical processes, ensuring business continuity.
Industry-Specific Strategies: Tailored recommendations address the unique challenges of legacy systems in industrial environments, from refineries to power plants.
Aligned with 2025 Standards: Incorporates the latest CISA guidelines, NIST CSF, and ISA/IEC 62443 standards, ensuring compliance and relevance.
Expert Insights: Built on decades of experience in OT/ICS cybersecurity, providing actionable advice you can trust.
Download our guide to gain the knowledge and tools needed to protect your legacy ICS systems and strengthen your cybersecurity posture.
Key Takeaways from the Guide
Our ICS security for Legacy systems guide delivers actionable insights to help you secure your infrastructure without disruption. Here’s what you’ll learn:
Assess Legacy Vulnerabilities: Identify weaknesses in your ICS systems, including outdated protocols, unpatched software, and weak access controls.
Implement Non-Invasive Upgrades: Discover techniques like network segmentation, intrusion detection, and endpoint hardening to secure systems without downtime.
Leverage Modern Security Tools: Learn how to integrate advanced monitoring and encryption solutions with legacy infrastructure for robust protection.
Ensure Regulatory Compliance: Align with CISA, NIST, and ISA/IEC 62443 standards to meet compliance requirements and avoid penalties.
Plan for Long-Term Resilience: Adopt strategies to future-proof your ICS environment, including secure-by-design principles for new deployments.
These takeaways empower you to protect your legacy systems, maintain compliance, and ensure operational reliability in a dynamic threat landscape.
How Shieldworkz Supports Your Legacy ICS Security
Shieldworkz is committed to helping industrial leaders secure their OT/ICS environments with tailored solutions and expertise. We understand the complexities of legacy systems and the need for seamless security upgrades. Here’s how we support you:
Specialized Consulting: Our OT cybersecurity experts provide customized guidance to assess and secure your legacy systems without disrupting operations.
Advanced Protection Tools: Deploy cutting-edge solutions for real-time threat detection, anomaly monitoring, and secure system integration.
Targeted Training Programs: Equip your team with the skills to manage and secure legacy ICS systems through industry-specific training.
Sustainable Security Strategies: We help you build a long-term cybersecurity roadmap that balances legacy protection with modern innovation.
With Shieldworkz as your partner, you’ll secure your legacy systems while maintaining operational efficiency and regulatory compliance.
Who Should Download?
This guide is designed for:
Chief Information Security Officers (CISOs)
OT/ICS Managers
Plant and Operations Directors
Compliance and Risk Officers
Ready to Secure Your Manufacturing Operations?
Download our ICS Security for Legacy Systems, Upgrade Without Downtime guide now and take control of your cybersecurity future. Ensure operational continuity and compliance with Shieldworkz.
Fill out the form below to access your free guide and partner with Shieldworkz to secure your legacy ICS systems without downtime.
Download your copy today!
The Challenge of Securing Legacy ICS Systems
In the heart of manufacturing plants, oil and gas facilities, and energy grids, Industrial Control Systems (ICS) power critical operations. Many of these systems, however, rely on legacy technology, decades-old equipment designed for reliability, not cybersecurity. As Operational Technology (OT) environments become more connected to IT networks and IoT devices, these legacy systems are increasingly vulnerable to sophisticated cyber threats. Recent data indicates that over 60% of industrial organizations experienced a cyber incident in 2024, with legacy systems being a primary target due to unpatched vulnerabilities and outdated protocols.
Securing legacy ICS systems is a unique challenge. Replacing them entirely is often cost-prohibitive and risks operational downtime, while leaving them unprotected invites catastrophic breaches that can halt production, compromise safety, or incur millions in losses. The solution lies in strategic upgrades that enhance security without disrupting operations. Shieldworkz is dedicated to helping industrial leaders in manufacturing, oil and gas, and energy sectors protect their legacy systems with practical, downtime-free strategies. Our guide, ICS Security for Legacy Systems, Upgrade Without Downtime, equips decision-makers with the tools to safeguard critical infrastructure in 2025 and beyond.
Why Focus on Legacy ICS Security?
Legacy ICS systems, such as SCADA, PLCs, and DCS, were built for isolated environments, lacking modern cybersecurity features like encryption or robust access controls. As industrial operations embrace digital transformation, these systems are exposed to new risks, including ransomware, insider threats, and supply chain attacks. Securing them is critical for several reasons:
Protect Operational Continuity: A breach in a legacy system can halt production lines, disrupt energy supply, or endanger worker safety, leading to significant financial and reputational damage.
Address Evolving Threats: Cyberattacks targeting OT systems have surged, with 2024 seeing a 140% increase in incidents exploiting legacy vulnerabilities.
Meet Compliance Requirements: Regulations like CISA’s Cross-Sector Cybersecurity Performance Goals (CPGs) and ISA/IEC 62443 demand robust security for all ICS assets, including legacy systems.
Extend System Lifespan: Upgrading security allows organizations to maximize the value of existing infrastructure without costly replacements.
By prioritizing legacy ICS security, organizations can maintain operational efficiency, ensure compliance, and build resilience against today’s cyber threats.
Why Download Shieldworkz Legacy ICS Security Guide?
Shieldworkz ICS Security for Legacy Systems, Upgrade Without Downtime is a comprehensive resource tailored for decision-makers in manufacturing, oil and gas, and energy sectors. Crafted by OT cybersecurity experts, this guide offers practical strategies to secure legacy systems while keeping operations running smoothly. Here’s why it’s essential:
Downtime-Free Solutions: Learn proven methods to enhance security without interrupting critical processes, ensuring business continuity.
Industry-Specific Strategies: Tailored recommendations address the unique challenges of legacy systems in industrial environments, from refineries to power plants.
Aligned with 2025 Standards: Incorporates the latest CISA guidelines, NIST CSF, and ISA/IEC 62443 standards, ensuring compliance and relevance.
Expert Insights: Built on decades of experience in OT/ICS cybersecurity, providing actionable advice you can trust.
Download our guide to gain the knowledge and tools needed to protect your legacy ICS systems and strengthen your cybersecurity posture.
Key Takeaways from the Guide
Our ICS security for Legacy systems guide delivers actionable insights to help you secure your infrastructure without disruption. Here’s what you’ll learn:
Assess Legacy Vulnerabilities: Identify weaknesses in your ICS systems, including outdated protocols, unpatched software, and weak access controls.
Implement Non-Invasive Upgrades: Discover techniques like network segmentation, intrusion detection, and endpoint hardening to secure systems without downtime.
Leverage Modern Security Tools: Learn how to integrate advanced monitoring and encryption solutions with legacy infrastructure for robust protection.
Ensure Regulatory Compliance: Align with CISA, NIST, and ISA/IEC 62443 standards to meet compliance requirements and avoid penalties.
Plan for Long-Term Resilience: Adopt strategies to future-proof your ICS environment, including secure-by-design principles for new deployments.
These takeaways empower you to protect your legacy systems, maintain compliance, and ensure operational reliability in a dynamic threat landscape.
How Shieldworkz Supports Your Legacy ICS Security
Shieldworkz is committed to helping industrial leaders secure their OT/ICS environments with tailored solutions and expertise. We understand the complexities of legacy systems and the need for seamless security upgrades. Here’s how we support you:
Specialized Consulting: Our OT cybersecurity experts provide customized guidance to assess and secure your legacy systems without disrupting operations.
Advanced Protection Tools: Deploy cutting-edge solutions for real-time threat detection, anomaly monitoring, and secure system integration.
Targeted Training Programs: Equip your team with the skills to manage and secure legacy ICS systems through industry-specific training.
Sustainable Security Strategies: We help you build a long-term cybersecurity roadmap that balances legacy protection with modern innovation.
With Shieldworkz as your partner, you’ll secure your legacy systems while maintaining operational efficiency and regulatory compliance.
Who Should Download?
This guide is designed for:
Chief Information Security Officers (CISOs)
OT/ICS Managers
Plant and Operations Directors
Compliance and Risk Officers
Ready to Secure Your Manufacturing Operations?
Download our ICS Security for Legacy Systems, Upgrade Without Downtime guide now and take control of your cybersecurity future. Ensure operational continuity and compliance with Shieldworkz.
Fill out the form below to access your free guide and partner with Shieldworkz to secure your legacy ICS systems without downtime.