Sheffield's SCI Semiconductor raises £5m to scale memory-safe chips
The startup aims to eliminate critical hardware vulnerabilities by embedding security directly into computer architecture.
Sheffield-based SCI Semiconductor has raised £5 million in an oversubscribed funding round to accelerate the production of its memory-safe computer chips. The investment marks a significant shift in cybersecurity, moving from reactive software patching toward proactive hardware-level defense.
The funding round was led by PXN Ventures and Mercia Ventures (NPIF II fund managers), with additional participation from Osney Capital and Black Opal Ventures. SCI Semiconductor will use the capital to scale the production of its ICENI range of chips and develop a new generation of hardware within the UK. According to CEO Haydn Povey, demand for the ICENI chip has been "overwhelming" since its unveiling earlier this year.
The CHERI Framework
Founded in 2022 by Haydn Povey, Krishna Anne, and Dr. David Chisnall, the company addresses a fundamental flaw in traditional computing: free memory access. This vulnerability allows attackers to exploit coding flaws to gain unauthorized system control, a risk highlighted by the 2024 CrowdStrike outages. To solve this, SCI developed its chips based on CHERI (Capability Hardware Enhanced RISC Instructions), a government-backed framework for memory safety.
By dividing memory into trusted compartments, the ICENI chips prevent the unauthorized memory access that typically enables deep system exploits. This architectural approach allows the company to act as a core supplier in the UK government's Accelerated CHERI Adoption Programme and assists clients in meeting the requirements of the European Cyber Resilience Act (CRA).
Industry Implications
Hardware-level security is becoming critical as AI tools grow more capable of identifying deep system flaws. Furthermore, the rise of AI-generated code increases the likelihood of deploying software with inherent memory vulnerabilities. For critical infrastructure, defense, and medical sectors, software patches are often insufficient to guarantee total system integrity.
Will Schaffer, Investment Director at Mercia Ventures, described SCI's approach as an "elegant solution to a trillion-dollar problem" that has largely eluded other industry players. The company's traction is already evident through established partnerships with Microsoft and Google Research.
Market Traction
Beyond the recent venture capital injection, SCI Semiconductor has secured £7.7 million in government contracts, signaling strong institutional support for the transition to memory-safe architecture. As the company ramps up production, the industry will be watching whether this hardware-centric security model can be scaled across general-purpose computing to permanently reduce the surface area for cyberattacks.