Breach Detection IsMission Critical

Every login is a potential security incident. Compromised credentials are the #1 attack vector, responsible for 83% of data breaches. Here's why breach detection isn't optional—it's essential infrastructure.

How We Protect Privacy While Detecting Breaches

Our system uses proven cryptographic techniques to check billions of breached credentials without ever seeing your users' actual passwords. Here's how it works:

Simple Readable Example: "semicircle" Password Check

(For demonstration purposes only. In practice, you'll only use hashed data with our API.)

Step 1: A New Sign Up or Log In Attempt:

Your user enters inputs credentials into your website

semicircle

Step 2: You extract the prefix locally:

Your system sends only the prefix to our API

"semi"

Step 3: We OnlyReturn Matching Suffixes

Our API returns all known suffixes that start with "semi"

Returned Suffix List:
colon
conductor
circle
final
tone

Step 4: Your System Checks Locally for a Breach

You check locally if "circle" appears in the returned list. If so, you locally conclude that the password has been breached.

"semi" + "circle" = "semicircle"
BREACHED
Privacy Guaranteed
The full password "semicircle" never left your network, only the prefix "semi" was transmitted. Even if someone intercepts our API call, they can't reconstruct the original password.

Privacy Guarantees

Zero-trust architecture
Only hash prefixes are transmitted
Anonymity protection
Each prefix maps to hundreds of possibilities
No data retention
Queries aren't logged or stored
Industry standard crypto
SHA-256 hashing with proven security

Take a Closer Look at OurZero-Knowledge System

Built on proven anonymity-retention principles, our API ensures your users' sensitive data never leaves your systems while delivering enterprise-grade breach detection with sub-100ms response times.

01

Local Hashing & Privacy

Your application hashes user credentials using SHA-256 locally. Raw passwords and emails never leave your infrastructure, ensuring complete data sovereignty and GDPR compliance.

Privacy-Preserving
Lightning Fast
Zero Trust Framework
breach-detection.js
const hash = crypto.createHash('sha256')
  .update(password)
  .digest('hex');
const prefix = hash.substring(0, 5);
02

Secure API Query

Only the hash prefix is transmitted to our API over encrypted channels. This preserves anonymity while enabling lightning-fast breach detection.

Privacy-Preserving
Lightning Fast
Zero Trust Framework
breach-detection.js
const response = await fetch(
  `https://api.breachscan.ai/check-password/${prefix}`,
  {
    headers: {
      'X-API-Key': apiKey
    }
  }
);
03

Local Verification

Our API returns matching hash suffixes. Your application performs local verification to determine if a breach occurred, maintaining complete privacy and security.

Privacy-Preserving
Lightning Fast
Zero Trust Framework
breach-detection.js
const { suffixes } = await response.json();
const suffix = hash.substring(5);
const isBreached = suffixes.includes(suffix);

return { breached: isBreached, details };

Why Choose BreachScan

Fast, secure, and privacy-first breach detection that integrates seamlessly with your existing systems.

Zero Data Exposure

Your passwords never leave your system. We only see anonymized hash prefixes.

Complete Privacy

Sub-100ms Response

Lightning-fast breach detection that won't slow down your authentication flow.

No User Impact

3B+ Breach Records

Historical breach dataset (COMB 2021) for credential-reuse checks.

Maximum Coverage

99%+ Uptime

Enterprise-grade infrastructure with global CDN and automatic failover.

Always Available

Don't Wait for a Breach

Every day without breach detection is a day your users and business are at risk. Implement enterprise-grade security in minutes, not months.

Start IntegrationGet API Key