Secrets & Exposure
critical Severity
Free Check

Extended Secret Patterns & High-Entropy Strings

Uses Shannon entropy calculations to uncover hidden RSA private keys, JWT secrets, and bearer tokens in public assets.

Test Your Website for Extended Secret Patterns & High-Entropy Strings

Run this check along with 90+ automated tests across your domain.

Why It Matters

High-entropy strings usually represent cryptographic keys or authentication hashes that allow impersonation.

How We Check This

We analyze string entropy (> 4.5 bits/char) for base64 and hexadecimal payloads embedded in HTML and script files.

How to Fix & Implement

Copy-paste configuration blocks tailored for your web server or edge proxy.

nginx snippet
Sanitize client-side script builds during CI/CD before deployment

Frequently Asked Questions

What is Shannon entropy in security scanning?

It measures randomness. Plain English has low entropy (~2-3 bits/char), while encryption keys have high entropy (>4.5).