Zscaler, Inc., the leader in cloud security, today signed a Memorandum of Understanding (MoU) with Singtel Singapore at Mobile World Congress to make Zscaler Cellular available to enterprises across Southeast Asia (SEA) through Singtel’s connectivity and regional reach. This collaboration helps customers secure SIM-connected IoT/OT devices at even greater speed, reduce operational risk and downtime, and extend Zero Trust protections to non-human identities and emerging cellular use cases such as connected vehicles – without requiring device agents or major changes to carrier infrastructure.

As cellular IoT/OT adoption accelerates – powering smart infrastructure, industrial modernization, healthcare devices, transportation systems, and connected fleets – the attack surface expands rapidly. This growth often outpaces the visibility and control provided by traditional security approaches built primarily for users and workloads. Momentum in the region underscores the urgency: the SEA IoT market is projected to grow at a CAGR of ~20–23% through 2030, fueling rapid expansion of connected environments that need stronger, more scalable security controls. This risk is already playing out in Singapore, which ranks second globally for observed IoT attacks, accounting for 5.3% of the worldwide total. With more always-on devices, limited patchability, and increased reliance on third-party connectivity, organizations face rising risks of disruption, data exposure, and operational downtime – especially in critical environments where resilience is non-negotiable.

The Zscaler-Singtel partnership combines trusted connectivity with cloud-delivered security controls to help customers secure SIM-connected devices and data with a Zero Trust approach. Zscaler Cellular is designed to be quick to roll out, with simple provisioning and minimal changes to existing carrier infrastructure. It lets teams set fine-grained security policies for each cellular device using identifiers like IP address, device international mobile equipment identity (IMEI), or SIM international mobile subscriber identity (SIM IMSI), while providing centralized visibility into all cellular traffic. By isolating devices from one another and enforcing least-privilege access, Zscaler Cellular helps reduce the risk of lateral movement, eliminate the need to manage device agents, and provide organizations secure cellular-connected use cases across industrial IoT, retail, mobility, and critical infrastructure.

“The next phase of Zero Trust is protecting all  devices that run critical services—not just users and applications,” said Nathan Howe, Senior Vice President, Innovation & Product Management at Zscaler. “At Mobile World Congress, we’re thrilled to partner with Singtel Singapore and sign an MoU that extends the power of the Zscaler Zero Trust Exchange™ to cellular-connected IoT and OT across Singapore and ASEAN. By stopping threats inline and strengthening visibility and segmentation, we’re enabling organizations to operate securely at scale as they connect more devices and modernize critical environments.”

“As enterprises expand their use of mobile, IoT and operational technologies, they must scale security in tandem with network growth. Our partnership with Zscaler brings together Singtel’s advanced network connectivity with Zero Trust security to help organizations securely connect and protect critical devices at scale. This partnership reinforces our commitment to delivering integrated connectivity and cybersecurity solutions that accelerate our customers’ digital transformation,” said Keith Leong, Chief Customer Officer, Enterprise, Singtel Singapore.

To learn more about how Zscaler utilizes Zero Trust to secure SIM-connected IoT/OT devices, please visit the Zscaler Cellular page.

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Forward-Looking Statements

This press release contains forward-looking statements that are based on our management's beliefs and assumptions and on information currently available to our management. These forward-looking statements include the expected establishment and benefits of the Zscaler-Singtel partnership to deliver Zscaler Cellular across Southeast Asia. These forward-looking statements are subject to the safe harbor provisions created by the Private Securities Litigation Reform Act of 1995. A significant number of factors could cause actual results to differ materially from statements made in this press release, including those factors related to our ability to successfully deliver Zscaler Cellular across Southeast Asia with Singtel. Additional risks and uncertainties are set forth in our most recent Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission (“SEC”) on February 26, 2026, which is available on our website at ir.zscaler.com and on the SEC's website at www.sec.gov. Any forward-looking statements in this release are based on the limited information currently available to Zscaler as of the date hereof, which is subject to change, and Zscaler will not necessarily update the information, even if new information becomes available in the future.