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IEC 62443 for Life Sciences: What Asset Owners and Integrators Should Implement

A simplified GMP‑focused guide for OT/automation cybersecurity

Life sciences manufacturers depend on OT systems such as MES, SCADA, PLCs, historians, environmental controls, and robotics. As these systems become more interconnected, cyber risk increases — and regulators now expect structured, standards‑based approaches to securing automation.

The ISA/IEC 62443 series is the global cybersecurity framework for Industrial Automation and Control Systems (IACS), offering a role‑based and lifecycle‑driven method for securing GMP manufacturing systems.

1. Understand the IEC 62443 Structure (Simplified)

IEC 62443 is organized into four groups that map easily to GMP expectations:

  1. General Concepts (62443‑1‑x)
    Defines terminology, foundational security models, and the zones and conduits segmentation approach used across automation networks.
  2. Policies & Procedures (62443‑2‑x)
    Requirements for asset owners, including governance, patching, change control, training, and security program structure.
  3. System Requirements (62443‑3‑x)
    Requirements for system integrators, including architecture, access control, system hardening, network segmentation, and logging. 
  4. Component Requirements (62443‑4‑x)
    Requirements for product suppliers, including secure development lifecycle practices and technical security capabilities for automation components.

2. Know the Key Roles (Who Must Do What)

IEC 62443 clearly defines responsibilities across the automation ecosystem.

  1. Asset Owners (Pharma/biotech manufacturers)
    1. Own overall cybersecurity risk for OT and IACS
    2. Define security levels (SL1–SL4) for each system
    3. Maintain governance, patching, incident response, and change control
    4. Ensure suppliers and integrators follow 62443 expectations
  2. System Integrators 
    1. Design secure architectures (zones and conduits)
    2. Configure and harden systems
    3. Implement access control, logging, and monitoring
    4. Deliver systems capable of meeting required security levels
  3. Product Suppliers
    1. Follow secure product development lifecycle (per 62443‑4‑1)
    2. Provide hardened PLCs, HMIs, servers, and applications
    3. Supply patches, security features, and documentation

3. What Life Sciences Should Implement Immediately

  1. Segment OT Networks Using Zones and Conduits
    Group systems (SCADA, MES, lab automation, HVAC/EMS, historians) by risk and tightly control traffic between them. This reduces the chance of malware or unauthorized access spreading
  2. Assign Security Levels (SL1–SL4) Based on GMP Risk
    1. SL2 is appropriate for most GMP OT systems.
    2. SL3 is often needed for sterile or high‑risk operations.
      Integrators must design solutions that meet these levels.
  3. Establish a Cybersecurity Program (62443‑2‑1)
    Build a program that includes:

    1. Asset inventory
    2. Network diagrams
    3. Patch and vulnerability management
    4. Access control rules
    5. Backup and recovery
    6. Incident response procedures
      This aligns well with GMP quality systems.
  4. Require Integrators to Deliver Secure System Designs
    Ensure integrators follow 62443‑3‑x requirements for:

    1. Network segmentation
    2. Firewalls and secure conduits
    3. Enforced authentication
    4. Logging, monitoring, and alarms
  5. Ensure Suppliers Provide Secure Components
    Ask for evidence of secure development lifecycle practices (62443‑4‑1) and component-level security features (62443‑4‑2).
    These help keep GMP systems secure for long equipment lifespans

Summary

IEC 62443 gives life science manufacturers, integrators, and automation suppliers a common, structured, and regulatory‑aligned approach for securing OT systems. By implementing its role‑based requirements — segmentation, security levels, governance, system hardening, and secure product development — organizations strengthen both cybersecurity and GMP compliance.

This simplified model keeps OT environments defensible, resilient, and inspection‑ready.

About PSC Biotech®

Founded in 1996, PSC Biotech® has spent more than three decades providing life sciences with essential services to ensure that healthcare products are developed, manufactured, and distributed to the highest standards in compliance with all applicable regulatory requirements. Our goal is to skyrocket our clients’ success. To achieve this, our method is straightforward; we put the client’s needs first. We attain top-tier expertise for each project stage, from generating comprehensive project plans to reaching extensive production operations into attentive asset management, authenticity, and non-expendable ventures. Since our inception, PSC Biotech® has served as a strategic partner to emerging and established life science companies, all to help bring their life-saving products to market. PSC Biotech® operates in 52 countries globally and has served thousands of clients. Employing a global team of skilled professionals and experts that span strategically located offices in North America, Europe, Asia, Australia, and the Middle East, we are proud of the roles we have fulfilled to help our clients achieve success.

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