What is Client Side DLP?
Data protection that runs on the device, not in the cloud.
Short answer
Client side DLP runs detection directly on the user's device, inside the browser and IDE, rather than inspecting traffic in the cloud. This is the architectural advantage behind LeakSnitch: the sensitive data is examined and stopped exactly where it is typed, and it never has to leave for inspection.
In depth
Cloud based DLP must copy or route traffic to its own infrastructure to inspect it, which creates a standing target and a trust question. Client side DLP has no such requirement. LeakSnitch's engine runs in your browser sandbox, patterns are cached locally, and detection continues even during outages.
The tradeoff cloud vendors claim is that client side detection is weaker. LeakSnitch answers that with a context aware engine, entropy fallback, and checksum validators, all of it publicly auditable, so teams can verify the protection instead of taking a vendor's word.
Frequently asked questions
Is client side detection accurate enough?
Yes. LeakSnitch combines 55+ public patterns with context signals, entropy analysis, and Luhn and Verhoeff validation, and it scores every detection with explainable severity levels. You can audit every rule in real time.
Related terms
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