Secure Claude

Use Claude at work — with sensitive data kept in

Emil's browser extension screens what your team types into Claude, catching PII, secrets, and privileged content before the prompt reaches Anthropic.

The risk with Claude

  • Employees paste contracts and client data into Claude to draft and summarize.
  • That content leaves your environment the moment it's sent.
  • There's no record of what was shared or whether it was sensitive.

What Emil catches in Claude

  • SSNs (with or without dashes), emails, phone numbers, addresses
  • Account, routing, and credit card numbers
  • API keys, tokens, and other secrets
  • Confidential or privileged content via custom rules

How it works

  • Install the Emil extension — it activates on Claude automatically
  • Prompts are screened in the browser, before they're sent
  • Sensitive spans are redacted or you're warned; metadata only is logged

Screening happens locally; only finding metadata (type + severity) is retained, never your content.

Questions

Is Claude safe for confidential work?
With Emil in front of it, yes. Emil screens prompts on claude.ai and redacts sensitive or privileged content before it's sent to Anthropic.
Does it work on claude.ai?
Yes. The Emil extension runs on claude.ai and screens prompts as they're typed.
What does Emil catch?
PII (including SSNs without dashes), financial data, secrets and API keys, and confidential content you define via custom rules.
Is anything stored?
Only finding metadata — never the prompt content.

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