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Cybersecurity Company

CriticalBlue

Edinburgh software company behind Approov, a mobile app and API security product

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TrustList summary

CriticalBlue is an Edinburgh software company with a branch office in San Jose, California. It created Approov, a security service that protects the APIs behind mobile apps, checking that requests come from genuine, unmodified apps.

What CriticalBlue does

App attestation: confirms that only authentic apps can call a business's APIs.
Runtime protection: checks the device, the app and the connection while it runs.
Secrets protection: keeps API keys in the cloud and delivers them only to verified apps.
Certificate pinning: protected connections with updatable pins.
Threat analytics: visibility into attacks on mobile apps.

Customers and markets

Businesses with mobile apps that rely on API channels, across Android, iOS and HarmonyOS.

Key facts

Based in: Edinburgh, Scotland
Other office: San Jose, California
Product: Approov

Summary written by TrustList from the business's own published information, Oct 2026.

Categories & features

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