A well-designed industrial network architecture plays a critical role in limiting the spread of cyber threats across operational technology (OT) environments. However, even with network segmentation and security controls in place, vulnerable network devices can provide attackers with potential access points if they are not adequately protected.

Device hardening strengthens industrial network security by reducing the attack surface and integrating cybersecurity safeguards directly into device functionality. By minimizing exploitable weaknesses, organizations can improve OT cyber resilience and better protect critical infrastructure from evolving cyber threats. Moxa supports this objective through its Secure-by-Design development framework, incorporating security requirements from the earliest stages of product development and reinforcing them with built-in protection features, continuous vulnerability management, and long-term security maintenance throughout the product lifecycle.



Built-In Security Across Every Moxa Device

Secure-by-Design Development

Cybersecurity Standards Alignment

Vulnerability Management

Secure-by-Design Development

  • Effective device hardening starts long before a product reaches the field. Moxa's Secure-by-Design methodology embeds cybersecurity controls across every phase of the product development lifecycle, proactively minimizing attack surfaces and eliminating vulnerabilities in OT environments before they can be exploited.

    Core security engineering practices include:

    • Threat modeling integrated into system architecture and network design
    • Secure coding standards and rigorous development controls
    • Cybersecurity requirements embedded into product validation and qualification
    • Security testing, penetration assessments, and vulnerability scanning

  • This security-first engineering approach equips Moxa industrial networking devices with built-in hardening capabilities that directly support OT cyber resilience and critical infrastructure protection:

    • Secure Boot for hardware-level device integrity and authenticity verification
    • Least-privilege architecture that eliminates unnecessary services and reduces the attack surface
    • Multi-factor user authentication and granular role-based access control (RBAC)
    • Network access authentication to enforce authorized device connectivity
    • End-to-end encrypted communications for secure remote management and configuration
Moxa Secure-by-Design development process for industrial device hardening

Industrial Cybersecurity Standards Alignment

Achieving verifiable cyber resilience in industrial automation requires alignment with globally recognized cybersecurity frameworks. Moxa designs and certifies its industrial networking products against the most rigorous international security standards, enabling operators to meet compliance requirements and reduce OT security risk across critical infrastructure deployments.


Key industrial cybersecurity certifications and compliance frameworks include:

  • IEC 62443-4-1, Secure Development Lifecycle (SDL) certification for industrial product development processes
  • IEC 62443-4-2, Component-level security capability requirements for industrial automation and control system (IACS) devices

  • EU Cyber Resilience Act (CRA) and RED Delegated Act (RED-DA), mandatory cybersecurity requirements for connected devices in the European market.

  • JC-STAR, Japan's cybersecurity certification scheme for IoT and industrial connected devices

Moxa ranks among the first industrial networking vendors globally to achieve IEC 62443-4-1 SDL certification, with multiple product families also holding IEC 62443-4-2 component certifications. This multi-standard compliance posture reflects Moxa's commitment to building trustworthy, standards-compliant networking infrastructure for industrial automation, energy, transportation, and other safety-critical sectors.

Moxa industrial cybersecurity certifications IEC 62443 CRA compliance

Cybersecurity Vulnerability Management

The industrial cybersecurity threat landscape is constantly evolving, new vulnerabilities emerge regularly, and attackers increasingly target OT networks and connected industrial devices. Sustaining long-term device security and network resilience requires a structured, proactive vulnerability management program that extends well beyond initial product deployment.


Moxa's dedicated Product Security Incident Response Team (PSIRT) follows an industry-aligned process to identify, prioritize, and remediate cybersecurity vulnerabilities across its industrial networking portfolio:

  • Continuous monitoring of global security advisories, CVE databases, and vulnerability disclosure channels
  • In-depth impact assessment of identified vulnerabilities across affected product lines and OT deployments
  • Rapid development and delivery of mitigation guidance, security patches, and firmware updates
  • Timely publication of security advisories and actionable remediation recommendations for operators and system integrators

This structured vulnerability management approach empowers industrial operators to proactively address emerging cyber threats, reduce OT operational risk, and maintain the integrity of critical industrial network infrastructure throughout the full product lifecycle.

Moxa PSIRT proactive vulnerability management for industrial cybersecurity