How to Check for Email Breaches Programmatically (Free API, No Key)

📰 Dev.to · CodeLong888

Learn to check for email breaches programmatically using a free API, no key required, to enhance user security in your app

intermediate Published 21 Apr 2026
Action Steps
  1. Use the Have I Been Pwned API to check for email breaches
  2. Send a GET request to the API endpoint with the email address as a parameter
  3. Parse the JSON response to determine if the email has been breached
  4. Implement a warning system in your app to notify users of potential breaches
  5. Test the integration with various email addresses to ensure accuracy
Who Needs to Know This

Developers and security teams can benefit from this technique to protect user email accounts and prevent potential breaches

Key Insight

💡 The Have I Been Pwned API provides a simple way to check for email breaches without requiring an API key

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🚨 Check for email breaches programmatically with a free API! 🚨

Key Takeaways

Learn to check for email breaches programmatically using a free API, no key required, to enhance user security in your app

Full Article

The Problem You're building an app and need to warn users if their email has been...
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