Taipei, Taiwan, March 26, 2026—Moxa Inc., a trusted leader in industrial communications and networking, has added another significant milestone to its growing portfolio of cybersecurity achievements. The NPort 6000-G2 Series has become the world’s first serial device server to achieve the IEC 62443-4-2 Security Level 2 certification under the International Electrotechnical Commission for Electrical Equipment (IECEE) Certification Body Scheme.

This achievement underscores Moxa’s dedication to securing the often-overlooked connectivity edge of industrial networks, ensuring legacy serial devices are protected with the same rigorous standards as modern IP-based infrastructure.

As industries accelerate towards digitalization, the convergence of IT and OT networks has exposed critical operational assets to new cyberthreats. Many of these assets communicate via legacy yet stable and industry-standard serial protocols (RS-232/422/485). However, these protocols were designed for reliability in an era before interconnected networks and modern cybersecurity were a primary concern. The NPort 6000-G2 Series acts as a critical security gatekeeper for edge assets such as PLCs, meters, and consoles, enabling asset owners to keep their trusted infrastructure while meeting stringent security mandates.

Its launch marks a pivotal moment that completes Moxa’s "Edge-to-Core" security coverage. This certified defense-in-depth ecosystem now spans from the NPort 6000-G2 at the device level, to the EDS-G4000 switches and EDR-G9010 secure routers at the network core, and finally the UC-8200 Series industrial computers.

Validating Security at the Foundation

Bureau Veritas (BV), a global leader in testing, inspection, and certification, officially validated this achievement. It confirms the NPort 6000-G2 Series meets the strict technical security requirements for components in Industrial Automation and Control Systems (IACS).

"We are honored to witness Moxa achieving the world’s first IEC 62443-4-2 certification for a serial device server," said David Hsueh, Cyber Director of Technology Products Taiwan at Bureau Veritas.

"Recent threat intelligence findings reinforce a key principle: modern cyber risks often originate from overlooked components closest to day-to-day operations. Protecting only the core infrastructure is insufficient if edge devices remain exposed. Moxa supports the industry in addressing this critical gap by continuously enhancing the security of edge devices such as the NPort 6000-G2 Series. For industrial buyers, selecting secure-by-design products is no longer merely a compliance option—it is a fundamental requirement for diligent operational security."

A Long-term Commitment to Serial Connectivity

For over 35 years, Moxa has been the trusted name in serial connectivity.

"Our commitment to serial connectivity has never wavered. For decades, we have focused on getting devices connected, and today, our dedication has expanded to keeping them connected securely," said Casper Yang, Vice President, Product Business Group at Moxa.

"As serial devices remain essential in industrial operations, they also face growing cybersecurity challenges. This certification reflects our ongoing commitment to helping customers strengthen edge security while extending the life and value of their trusted infrastructure."

To learn more about Moxa’s long-term vision and continued investment in serial technology, you can visit the TSP (Trusted Serial Partner) Portal for more information.

NPort 6000-G2 Series Highlights:

• Built-in Serial Cybersecurity: As the world’s first serial device server to achieve IEC 62443-4-2 Security Level 2 certification, the NPort 6000-G2 provides a secure-by-design architecture that addresses incident visibility, role-based authentication, and data stream protection.
• Enforce Corporate Security Policies: Designed for seamless integration into enterprise security frameworks (NoC/SoC), the series supports standard IT protocols including centralized authentication servers and remote syslog for security monitoring.
• Web Troubleshooting With Serial Traffic Monitor: Troubleshooting is faster and requires no extra tools. Users can inspect serial and Ethernet traffic by port directly through the web interface to pinpoint issues within minutes.
• Ultimate Reliability and Flexibility: Combining broad OS support with ultimate serial performance, the series offers versatile operation modes and instant network connectivity, built specifically to withstand harsh industrial environments.

For more information about the NPort 6000-G2 Series, please visit:

NPort 6100-G2/6200-G2 Series (1/2-port Secure Terminal Servers)

NPort 6400-G2 Series (4-port Secure Terminal Servers)

NPort 6600-G2 Series (8/16/32-port Secure Terminal Servers)