NTT DOCOMO BUSINESS and TRANSATEL, an NTT subsidiary and a trailblazer in global cellular IoT connectivity, have partnered with Zscaler to unveil “Cellular SASE for IoT”—a groundbreaking offering tailored for the worldwide IoT sector. This marks the first solution of its kind introduced by a Japanese carrier. By merging TRANSATEL’s worldwide MVNO mobile connectivity with Zscaler’s zero trust security framework, the solution delivers cloud-native security and adaptable connectivity for IoT devices and enterprise mobile endpoints—eliminating the need for traditional VPNs or device-installed software agents. Leveraging the SIM card as the core foundation for both connectivity and security, this approach empowers customers to enhance protection while streamlining cross-border deployment and management.
Enabling secure, large-scale global IoT rollouts
With IoT adoption surging, organizations are linking massive volumes of devices to networks across the globe. However, many IoT endpoints possess constrained processing capabilities and limited storage, rendering standard on-device security measures—like threat detection, access controls, and vulnerability mitigation—challenging to deploy. Consequently, these devices face growing exposure to cyber threats.
International deployments introduce additional hurdles, demanding compatibility with diverse device standards and region-specific network infrastructures. Conventional methods—such as configuring VPNs or installing endpoint security software—often struggle to scale efficiently. To address this, NTT DOCOMO BUSINESS and TRANSATEL are rolling out a novel solution that establishes secure links between IoT devices, cloud platforms, and corporate IT systems—all without relying on software installed directly on the devices. The solution also supports multi-carrier failover paths without requiring individual contracts per country, enabling enterprises to centrally oversee global IoT and IT ecosystems while reducing security vulnerabilities and fast-tracking digital transformation.
A SIM-driven, zero trust model for worldwide IoT
As IoT adoption accelerates, enterprises are connecting vast numbers of devices to networks around the world. At the same time, many IoT devices have limited processing power and storage capacity, making it difficult to implement conventional on-device security measures such as threat detection, access control and vulnerability response. As a result, these devices are increasingly exposed to cyber risk.
Global SIMs and centralized connectivity management
Powered by TRANSATEL’s global MVNO infrastructure, the solution ensures uninterrupted, always-on connectivity spanning over 200 countries and territories. TRANSATEL’s proven multi-carrier SIM technology guarantees reliable communication for IoT devices worldwide. Additionally, a unified portal for centrally administering SIMs and mobile lines globally significantly lightens the operational load for customers.
Zero trust security enforcement
Integrating Zscaler’s Zero Trust Exchange platform directly into the mobile network enables robust threat prevention and granular access controls for internet traffic—including firewall safeguards, URL filtering, and intrusion prevention systems (IPS)—on par with enterprise-grade IT environments. For private communications, all data is securely tunneled through the cloud, minimizing the attack surface while facilitating secure, two-way interactions between IoT devices and users or backend servers.
Premium centralized support
When paired with NTT DOCOMO BUSINESS’s managed services portfolio, known as “X Managed,” customers gain access to premium, end-to-end centralized support. As a certified member of Zscaler’s MSSP program, NTT DOCOMO BUSINESS delivers seamless integration across both networking and security domains.
Three industry leaders uniting connectivity, security, and integration
- NTT DOCOMO BUSINESS: Leads overall solution integration, design consultation, implementation guidance, and delivers high-quality centralized support via managed services.
- TRANSATEL: Provides global mobile connectivity services and the underlying connectivity management platform.
- Zscaler: Contributes one of the world’s largest security clouds and enforces zero trust policies across all SIM-based connections.
“Through our deepened collaboration with NTT DOCOMO BUSINESS and Transatel, Zscaler is introducing a cellular security solution to the global IoT market. By fusing trusted mobile connectivity with zero trust security, this offering will allow customers to scale deployments under uniform policies, shrink their attack surface, and simplify daily operations,” states Nathan Howe, Vice President of Emerging Technologies at Zscaler.
Accelerating secure IoT adoption across global industries
NTT DOCOMO BUSINESS and TRANSATEL, working alongside Zscaler, will continue refining this solution’s capabilities and broadening its geographic reach in step with IoT market growth. The partners will prioritize enabling secure IoT deployment in sectors such as manufacturing, logistics, energy, and smart infrastructure—helping clients drive digital transformation, automation, and international business expansion.
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