The semiconductor industry has long been the foundation of the global digital economy, powering innovation across telecommunications, automotive, defence, and cloud computing. With shifting geopolitical dynamics and heightened economic security concerns, semiconductor manufacturing is more important to national strategy than ever before.
Japan, once a global leader in the semiconductor industry, is undergoing a strategic and security-driven transformation. Innovation, speed, and quality manufacturing have made the country a technological powerhouse for decades. As Japan enters fiscal year 2026, cybersecurity is no longer just an operational concern but a national economic security imperative that will shape the future of Japan’s semiconductor ecosystem.
The Japanese Ministry of Economy, Trade and Industry (METI) has announced a fundamental shift in how strategic semiconductor assets will be protected. Starting in April 2026, any organisation that receives government semiconductor subsidies must follow the Operational Technology (OT) Security Guidelines for Semiconductor Device Factories, rolled out in October 2025. This requirement formally designates semiconductor plants as critical infrastructure, alongside power grids, telecommunications, and water systems, and reinforces a secure-by-design approach to protecting next-generation semiconductor manufacturing.
From policy to mandate
In the past, Japan’s technology regulations were largely advisory; however, that innovation-first approach is evolving. The Japanese government is increasingly linking economic security to the stability and integrity of the semiconductor supply chain. METI’s multibillion-dollar investments in major companies now include strict data sovereignty, infrastructure resilience, and operational security control requirements.
This shift reflects a global reality: Interconnected supply chains cannot tolerate weak identity or access controls at any point in their ecosystem. As seen in other priority sectors, such as healthcare, aviation, and energy, compliance alone is insufficient. Semiconductor manufacturers must demonstrate operational maturity, resilience against advanced threats, and disciplined governance over privileged access.
At the core of this shift is one critical question: Who has access to sensitive systems, and how is that access continuously controlled, monitored, and verified?
Identity as the new security boundary
Traditional cyber defences, such as perimeter defences, network microsegmentation, end-to-end encryption, and real-time automated threat detection, remain essential. In modern operational technology environments, identity and privileged access controls represent an important layer of defence. In semiconductor fabrication plants, these controls determine who can access critical systems and manufacturing data, and who can modify production tools and workflows.
Semiconductor fabrication plants rely on engineers, third-party vendors, and automated systems. The traditional “castle and moat” security model, which implicitly trusts users inside the network, is less suited to these environments. Controls that verify users, systems, and devices before and during access can help reduce unnecessary risk.
Under the principle of least privilege (PoLP), organisations aim to ensure that every identity — human, non-human (NHI), or AI agent — receives only the minimum level of access required to perform its function. This approach reduces the impact of credential theft and insider threats by limiting the potential for lateral movement within the organisation.
For third-party vendors supporting specialised fabrication systems, just-in-time access can be used to provide temporary, time-bound privileges as an alternative to persistent credentials. This reduces standing access and can help limit long-term exposure.
Taken together, these zero-trust principles support the requirements of subsidy-linked OT security mandates. Privileged access management (PAM) can be used to apply these principles, providing centralised visibility, policy enforcement, and oversight across hybrid OT and IT environments.
Protecting semiconductor intellectual property
Controlling access is only one part of the equation. Once identity is verified and access is granted, organisations must ensure that underlying data, intellectual property, and production telemetry remain protected against compromise or exfiltration. Zero-trust security architectures govern who can interact with systems, while encryption and secrets management protect what those systems contain.
In semiconductor manufacturing, protecting digital blueprints and production telemetry is as important as safeguarding physical equipment. These assets represent the industry’s intellectual property and competitive advantage. Securing them requires encryption aligned with industry standards, strict identity governance, and comprehensive auditability across all systems.
FIPS 140-3, a United States and Canadian government standard for validating cryptographic modules, is one example of an established encryption benchmark. Encryption alone is insufficient; if an attacker compromises an overprivileged identity, even strong cryptography can be undermined.
This is where integrated secrets management plays a role. Automated scripts, APIs, and infrastructure tools rely on machine identities and embedded credentials. Without centralised governance, these NHIs can become potential attack vectors. PAM can be used to secure, rotate, and monitor these secrets to reduce the risk of lateral movement and unauthorised access. Unified password, secrets, and connection management can help reduce credential sprawl and enforce consistent policy across human and non-human identities.
These controls are increasingly relevant as industrial espionage, AI-powered cyberattacks, advanced ransomware, and nation-state targeting of advanced manufacturing continue to escalate.
Proof of evidence
The METI mandate emphasises demonstrable, evidence-based oversight. Organisations must provide continuous, auditable evidence that controls are implemented and operating effectively. Point-in-time compliance assessments are no longer sufficient.
Zero-trust architectures and PAM platforms, which unify credential and secrets management, secure remote access, and privileged session control into a policy-driven security layer, can provide the visibility and auditability required to support these evidentiary requirements.
To meet subsidy-linked requirements, semiconductor manufacturers should implement:
- Session monitoring and recording: Capture and retain privileged activity to support oversight and regulatory review.
- Regular access reviews: Continuously validate privileged permissions and sensitive data paths to limit privilege creep.
- Independent validation: Maintain certifications, such as SOC 2 and ISO 27001, 27017, and 27018, to provide assurance to regulators, partners, and customers.
- Unified secrets management: Centralise control of credentials, API keys, and machine secrets to support auditability and lifecycle management.
Build on strength
The global semiconductor industry recognises that trust must be verified and continuously enforced. As Japan strengthens its semiconductor ecosystem, it is reinforcing a broader reality: Security maturity underpins economic competitiveness. As April 2026 approaches, industry leaders have an opportunity to modernise their security architectures. A secure-by-design strategy built on zero trust, privileged access management, and continuous monitoring can support innovation while maintaining resilience.
In an era defined by economic statecraft and supply chain competition, cybersecurity is no longer a back-office IT function. It is a strategic enabler of national resilience and long-term industrial capability.
By protecting identities, privileged access, and critical manufacturing systems, organisations do more than meet regulatory mandates; they contribute to maintaining Japan’s position as a secure global semiconductor partner.
