IoT Security Innovation by Silicon Labs: Achieving the First PSA Level 4 Certification Worldwide
Silicon Labs, a leading innovator in low-power wireless connectivity and embedded technology, has made a significant stride in IoT security with the introduction of its Series 3 Secure Vault. This security subsystem, integrated into the SiXG301 System-on-Chip (SoC), is the first to achieve PSA Level 4 certification, the highest security assurance level under the PSA (Platform Security Architecture) framework.
Key Features of the Series 3 Secure Vault
The Series 3 Secure Vault is built on an advanced 22 nm process node, enhancing both performance and energy efficiency. It offers robust protection against sophisticated physical attack vectors such as laser fault injection, side-channel attacks, microprobing, and voltage manipulation. These defenses are engineered to remain effective for over a decade in the field.
The security subsystem is designed to anticipate and withstand future evolving threats, supporting a security lifecycle rather than a one-time fix. It integrates with over-the-air (OTA) firmware and software updates and real-time monitoring, enabling continuous security maintenance and threat response.
Benefits of the Series 3 Secure Vault
The Series 3 Secure Vault provides the highest level of security assurance (PSA L4), crucial for sensitive applications requiring robust protection against both software and physical attacks. It offers a future-proof security architecture that can protect IoT devices for over a decade, reducing the risk of obsolescence and vulnerability over time.
By combining hardware security with live system updates and monitoring, it supports ongoing defense rather than static protection, addressing the dynamic nature of security threats. This security subsystem helps product developers accelerate regulatory compliance worldwide, increasing market access and consumer trust.
Availability and Partnership
The SiXG301 SoC with Series 3 Secure Vault is anticipated to be commercially available starting in Q3 2025, bringing this advanced security capability to the market for the first time. Keysight Technologies' experts noted the seamless partnership with Silicon Labs' engineering team during the audit process.
Compliance with Emerging Global IoT Security Regulations
The Series 3 Secure Vault enables compliance with emerging global IoT security regulations such as the EU Radio Equipment Directive (RED), Cybersecurity Regulation Act (CRA), US Cyber Trust Mark, and Singapore Cybersecurity Labeling Scheme (CLS), helping developers meet these mandates more easily.
Learning More
For those interested in learning more about Silicon Labs' security-first design and how they are helping device makers future-proof their solutions, visit the Silicon Labs Security Overview, CTO blog, Silicon Labs Custom Part Manufacturing Service (CPMS), and Silicon Labs Matter Developer Journey. Developers can also 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.
Silicon Labs' MG21 SoC was the world's first device to earn PSA Level 3 certification, demonstrating the company's commitment to IoT security. With the Series 3 Secure Vault, Silicon Labs continues to set a new benchmark in IoT security, ensuring that devices are compliant with the EU's RED regulations, which are now in effect as of August 1, 2025.
The Series 3 Secure Vault, integrated into Silicon Labs' SiXG301 System-on-Chip (SoC), is a futuristic technology that bolsters the company's cybersecurity capabilities in data-and-cloud-computing and technology, as it offers robust protection against both software and physical attacks, ensuring regulatory compliance with emerging global IoT security regulations like the EU Radio Equipment Directive (RED) and Cybersecurity Regulation Act (CRA), among others. This technology will become commercially available starting in Q3 2025.
