Backed by Combinator

Use safely without leaking sensitive data.

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

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 PII, PHI, credentials, 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.

Real data, swapped for placeholders

Sensitive data, like PII, PHI, and account numbers, gets detected and replaced inside your LogosGuard deployment (cloud tenant or self-hosted/VPC) before the prompt reaches the AI vendor.

Works with any AI tool

The same redaction layer covers AI tools like ChatGPT and Claude. One policy, one audit log, no per-tool integrations.

Full audit and compliance logs

Every prompt, every action, and every policy trigger is logged and searchable.

Three ways to protect your team.

Browser Extension

Intercepts prompts and routes them through your LogosGuard deployment for redaction before they reach the AI vendor.

✓ Works on all major AI web apps
✓ Real-time interception of prompts, with detection and redaction in your LogosGuard deployment
✓ No VPN or proxy required

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

Private LLM

Deploy a fully private, self-hosted LLM inside your own infrastructure, giving your team the power of frontier models without sending a single token to a third party.

✓ Runs on-prem or in your VPC
✓ No data ever leaves your environment
✓ Fine-tune on your proprietary data

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.

Use PerplexityUse safely without leaking sensitive data.