Internet measurement
Work on responsible systems for observing and organizing public infrastructure.
CAREERS
Build security infrastructure for the public internet.
Join Tohou in creating internet intelligence, data systems, developer tooling, and monitoring infrastructure for defenders.
WHAT TOHOU PROVIDES
Security context designed for action.
Security products
Turn complex infrastructure data into useful investigation and monitoring workflows.
Distributed systems
Build reliable APIs, datasets, search infrastructure, and continuous monitoring services.
We value careful engineering, clear reasoning, and practical security outcomes.
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