Silicon Labs Extends IoT Security Leadership with World's First PSA Level 4 Certification

Rhea-AI Summary

Silicon Labs (NASDAQ: SLAB) has achieved a significant milestone by becoming the first company to receive PSA Level 4 certification for its Series 3 Secure Vault security subsystem on the SiXG301 SoC. This certification, the highest level recognized by PSA Certified, validates the system's resilience against sophisticated physical attacks including laser fault injection, side-channel attacks, microprobing, and voltage manipulation.

The company collaborated with Keysight Technologies for validation testing, and the SiXG301 SoC is expected to be commercially available in Q3 2025. Built on a 22 nm process node, the Series 3 platform enhances Silicon Labs' security capabilities and helps device makers comply with new global regulations, including the EU's Radio Equipment Directive (RED) and CRA, US Cyber Trust Mark, and Singapore's Cybersecurity Labeling Scheme.

Positive

• First company globally to achieve PSA Level 4 certification, demonstrating security leadership
• Series 3 platform built on advanced 22 nm process node
• Product helps customers comply with new global security regulations
• Security system designed to protect against future threats for over a decade

Negative

• SiXG301 SoC not yet commercially available until Q3 2025

Insights

IoT Security Expert

Silicon Labs achieves unprecedented PSA Level 4 certification, establishing market leadership in advanced IoT security against sophisticated physical attacks.

Silicon Labs has achieved a significant industry milestone with the world's first PSA Level 4 certification for their Series 3 Secure Vault on the SiXG301 SoC. This isn't just another incremental security improvement—it represents a quantum leap in embedded device protection. PSA Level 4 specifically validates resilience against sophisticated physical attacks including laser fault injection, side-channel analysis, microprobing, and voltage manipulation—attack vectors previously considered theoretical but now emerging as real threats.

What makes this achievement particularly notable is the technical complexity required to reach this certification level. Unlike lower PSA certifications that focus primarily on software security, Level 4 demands sophisticated hardware-level protections integrated directly into the silicon. The independent validation by Keysight Technologies—a recognized leader in security testing—adds significant credibility to this certification.

The timing of this announcement is strategically valuable as it coincides with the implementation of the EU's Radio Equipment Directive (RED) which took effect August 1, 2025. By achieving PSA Level 4, Silicon Labs positions its customers to more easily meet these regulatory requirements—creating a compelling competitive advantage when IoT manufacturers are scrambling to ensure compliance.

Looking at market implications, this certification reinforces Silicon Labs' leadership position in the secure IoT space, particularly for applications requiring high security assurance such as industrial automation, critical infrastructure, and medical devices. The emphasis on future-proofing against emerging threats demonstrates a long-term security vision that will likely resonate with customers designing products with 10+ year lifecycles.

The new 22nm process node underlying the Series 3 platform suggests substantial improvements in performance and power efficiency beyond just security enhancements, though specific metrics aren't detailed in this release. With general availability targeted for Q3 2025, Silicon Labs is establishing an early technical leadership position in next-generation secure IoT solutions.

Series 3 Secure Vault, debuting on the SiXG301 SoC in the next-gen Series 3 lineup, achieves highest security certification for advanced IoT protection

AUSTIN, Texas, Aug. 4, 2025 /PRNewswire/ -- Silicon Labs (NASDAQ: SLAB), the leading innovator in low-power wireless, today announced that its Series 3 Secure Vault security subsystem on the SiXG301 SoC, the first SoC in its Series 3 portfolio, has achieved the world's first PSA Level 4 certification. This achievement – the highest level recognized by PSA Certified – affirms Silicon Labs' security leadership and its legacy of embedding trust at the core of connected technology.

"Security isn't just a feature, it's foundational to everything we develop." Matt Johnson, President and CEO, Silicon Labs

"Security isn't just a feature – it's foundational to everything we develop," said Matt Johnson, President and CEO of Silicon Labs. "Being the first to achieve PSA Level 4 certification is a powerful validation of our leadership in IoT security and our focus on accelerating IoT growth."

Raising the Bar: PSA Level 4 Certification

PSA Certified introduced the Level 4 certification and its two designations, iSE/SE for secure elements and ROT for Root of Trust, to address the rising complexity and sophistication of physical attacks on embedded devices. Unlike previous levels, Level 4 validates resilience against laser fault injection, side-channel attacks, microprobing, and voltage manipulation – threats once considered theoretical but now part of the evolving reality.

Silicon Labs has consistently led the industry in achieving PSA milestones. Its MG21 SoC was the world's first device to earn PSA Level 3 certification, establishing new benchmarks in protection against physical tampering and setting the stage for this next leap to Level 4. Silicon Labs SoCs were also the industry's first to reach PSA Levels 1 and 2.

Silicon Labs collaborated with Keysight Technologies, a market-leading design, emulation, and test solutions company with renowned test and evaluation labs to validate Secure Vault on Series 3 for PSA Level 4. Their experts noted the seamless partnership with Silicon Labs' engineering team, who demonstrated deep technical expertise and adaptability throughout the audit process.

"Keysight is proud to have supported Silicon Labs in achieving the world's first PSA Level 4 certification," said Marc Witteman, Technical Director, Keysight Device Security Testing at Keysight Technologies. "Our advanced testing methodologies, including side-channel analysis and fault injection, were instrumental to validating the Series 3 Secure Vault on the SiXG301's resilience against today's most sophisticated threats. This milestone reflects our commitment to helping innovators like Silicon Labs meet the highest levels of security assurance and regulatory readiness in a rapidly evolving IoT landscape."

Future-Proofing Through Security-First Engineering

The Series 3 Secure Vault and the SiXG301 SoC's resilience aren't just about meeting today's standards – it's about anticipating future threats. The security subsystem and SoC were engineered to endure over a decade in the field, with industry-leading defenses against threats not yet commonplace. When combined with over-the-air firmware and software updates and real-time monitoring, Series 3 Secure Vault and the SiXG301 exemplify security as an ongoing lifecycle, not a one-time event.

Silicon Labs' Series 3 platform, built on a 22 nm process node, is an industry leader in security and builds upon Silicon Labs' award-winning Series 2 security legacy and scales it with PSA Level 4 capabilities. All Series 3 devices are planned to feature this industry-leading enhanced security foundation, with the SiXG301 expected to be the first to market with PSA Level 4 certification when it becomes generally available in Q3 2025.

Enabling Compliance Around the World

As governments around the globe enact new regulations – such as the EU's Radio Equipment Directive (RED) and CRA, the US Cyber Trust Mark, and Singapore's Cybersecurity Labeling Scheme (CLS) – Silicon Labs stands ready to help device makers align with emerging mandates. Silicon Labs' holistic approach to security and expert guidance gives product teams a head start on regulatory readiness and consumer trust, backed by independent lab validation.

With the EU's RED regulations now in effect as of August 1, 2025. Silicon Labs' Secure Vault – when properly implemented – delivers the features needed for compliance. Developers can register for an upcoming webinar, Stay Ahead of Global IoT Security Regulations with Silicon Labs, to learn how to integrate RED-ready security into their products.

To learn more about how Silicon Labs is pioneering security-first design and helping device makers and future-proof their solutions, visit:

• Silicon Labs Security Overview
• CTO blog: Silicon Labs' Proven History of Firsts in IoT Security
• Silicon Labs Custom Part Manufacturing Service (CPMS)
• Silicon Labs Matter Developer Journey

About Silicon Labs

Silicon Labs Silicon Labs (NASDAQ: SLAB) is the leading innovator in low-power wireless connectivity, building embedded technology that connects devices and improves lives. Merging cutting-edge technology into the world's most highly integrated SoCs, Silicon Labs provides device makers with the solutions, support, and ecosystems needed to create advanced edge connectivity applications. Headquartered in Austin, Texas, Silicon Labs has operations in over 16 countries and is the trusted partner for innovative solutions in the smart home, industrial IoT, and smart cities markets. Learn more at www.silabs.com.

CONTACT: PR@silabs.com

 

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SOURCE Silicon Labs

FAQ

What is the significance of Silicon Labs achieving PSA Level 4 certification?

Silicon Labs is the first company worldwide to achieve PSA Level 4 certification, which validates protection against sophisticated physical attacks like laser fault injection and side-channel attacks, demonstrating the highest level of IoT security.

When will Silicon Labs SLAB SiXG301 SoC be available commercially?

The SiXG301 SoC is expected to be generally available in Q3 2025 as the first product with PSA Level 4 certification in the Series 3 portfolio.

What security threats does Silicon Labs Series 3 Secure Vault protect against?

The Series 3 Secure Vault protects against laser fault injection, side-channel attacks, microprobing, and voltage manipulation, with defenses designed to last over a decade in the field.

How does Silicon Labs SLAB Series 3 help with regulatory compliance?

The Series 3 platform helps device makers comply with new global regulations including the EU's Radio Equipment Directive (RED), US Cyber Trust Mark, and Singapore's Cybersecurity Labeling Scheme (CLS) through its advanced security features.

What process technology is used in Silicon Labs Series 3 platform?

Silicon Labs Series 3 platform is built on an advanced 22 nm process node, building upon their Series 2 security legacy while scaling it with PSA Level 4 capabilities.