Tosi

Computer and Network SecurityTexas, United States51-200 Employees

Tosi operates in the computer and network security sector, focusing on cyber-physical systems platforms for operational technology networks. Since 2011, the company has secured hundreds of thousands of industrial devices for critical infrastructure operators globally. Its platform enables secure connections to all OT within an organization in minutes, without the need for specialized expertise.

The company serves around 1,000 direct customers and thousands more through a network of more than 100 partners worldwide. It is headquartered in Irving, Texas, and Oulu, Finland. In February 2026, Tosibox Ltd introduced the Tosi Platform to provide secure connectivity, visibility, and control across OT environments.

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