Backed by   YCombinator

Use safely without leaking sensitive data.

Enterprise AI security without slowing your team down

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Built by researchers and engineers from

Ready to secure your team's AI usage?

Join security-conscious teams using LogosGuard to protect sensitive data from AI tools — without slowing anyone down.

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AI adoption is already happening

Training helps, but you still need a technical guardrail. IT teams can't block tools employees already use — they'll just find workarounds. Instead, you need visibility and control.

Data leaks are a real risk

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Existing solutions don't scale

Network blockers are too blunt. Training alone doesn't stick. You need automated, real-time enforcement that adapts to new tools and workflows.

Real-time redaction and blocking

Works with any AI

LogosGuard sits as a proxy between your team and any LLM — ChatGPT, Copilot, Claude, Gemini. No per-tool integrations needed.

TEST

Full audit and compliance logs

Two ways to protect your team.

Browser Extension

Blocks sensitive data from being submitted to AI web apps like ChatGPT, Copilot, and Claude — directly in the browser, before anything leaves the device.

  • ✓ Works on all major AI web apps
  • ✓ Real-time interception in the browser
  • ✓ No VPN or proxy required
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Desktop App

Monitors and blocks sensitive data sent through native desktop AI tools — covering apps the browser extension can't reach, like local clients and IDE integrations.

  • ✓ Covers native and desktop AI clients
  • ✓ Works across macOS and Windows
  • ✓ Lightweight background process
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Your rules. Your data.
Your control.

Ready to secure your team's AI usage? Get in touch with our team and discuss your use case.

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