Backed by Y Combinator

Use AI safely without leaking sensitive data.

Employees use ChatGPT, Copilot, and Claude every day. LogosGuard blocks sensitive data before it reaches AI tools.

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Built by researchers and engineers from

Organizations want AI productivity without exposing sensitive data.

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

Employees sharing credentials, API keys, customer data, or proprietary code with AI tools exposes your company to breaches, compliance violations, and competitive harm.

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.

A private gateway between your employees and external AI tools.

Real-time redaction and blocking

Detect sensitive data before it's sent. Warn users, redact automatically, or block outright — based on your policies. Works on paste, on type, and on submit.

Works with any AI tool

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

Full audit and compliance logs

Every prompt, every action, every policy trigger — logged and searchable. Meet SOC 2, HIPAA, and GDPR requirements with confidence.

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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