Breached Email Check

Check if an email has appeared in known data breaches and get detailed breach history, severity, compromised data, and remediation recommendations.

Check whether an email address has appeared in known data breaches. Submit any email address and get back a breach history report — including which breaches exposed the address, what data types were compromised, breach dates, and remediation recommendations. Essential for user onboarding security checks, employee credential monitoring, and threat exposure assessments.

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Usage

{
  "tool": "breached_email_check",
  "input": {
    "email": "[e-mail]"
  }
}

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Parameters

Field	Type	Required	Description
email	string	✅	The email address to check against known data breach databases

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What You Get

• Breach status — whether the email has been found in any known breaches
• Breach list — names of breaches the email appeared in, with dates
• Compromised data types — what was exposed per breach (passwords, phone numbers, physical addresses, credit cards, etc.)
• Breach severity rating — overall risk level based on sensitivity of exposed data
• Paste exposure — whether the email has appeared in public paste sites (Pastebin, etc.)
• Remediation guidance — specific actions to take based on breach findings (password reset, MFA, account monitoring)

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Example Output

{
  "email": "[e-mail]",
  "breached": true,
  "breach_count": 3,
  "severity": "High",
  "breaches": [
    {
      "name": "LinkedIn (2012)",
      "date": "2012-06-05",
      "compromised_data": ["Email Addresses", "Passwords"],
      "description": "Password hashes exposed in large-scale breach; later cracked and published",
      "verified": true
    },
    {
      "name": "Adobe (2013)",
      "date": "2013-10-04",
      "compromised_data": ["Email Addresses", "Password Hints", "Passwords", "Usernames"],
      "description": "Source code and encrypted credentials exposed for 153 million accounts",
      "verified": true
    },
    {
      "name": "DataBreach.com (2020)",
      "date": "2020-03-21",
      "compromised_data": ["Email Addresses", "Phone Numbers", "Physical Addresses"],
      "description": "Aggregated breach data compilation including PII from multiple sources",
      "verified": false
    }
  ],
  "paste_exposure": true,
  "paste_count": 1,
  "remediation": [
    "Change passwords on all accounts using this email address immediately",
    "Enable multi-factor authentication (MFA) on all associated accounts",
    "Check for unauthorized account activity on LinkedIn and Adobe",
    "Consider using a unique email alias for sensitive accounts going forward",
    "Monitor credit report if physical address was exposed"
  ]
}

When email is clean

{
  "email": "[e-mail]",
  "breached": false,
  "breach_count": 0,
  "severity": "None",
  "breaches": [],
  "paste_exposure": false,
  "paste_count": 0,
  "remediation": [
    "No known breaches found — continue using strong, unique passwords",
    "Enable MFA as a proactive measure"
  ]
}

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Use Cases

• User onboarding — check if a new user's email is in known breaches at signup
• Employee security audits — identify staff with exposed credentials before they become an attack vector
• Threat exposure assessment — assess corporate email domain exposure across your workforce
• Password reset triggers — automatically prompt users with breached emails to reset credentials
• Security awareness — show users their personal breach history to drive MFA adoption

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API Reference

Base URL: https://portal.toolweb.in/apis/security/breached-email-check

Endpoint	Method	Description
/check-breach	POST	Check an email address against known data breach databases

Authentication: Pass your API key as X-API-Key header or mcp_api_key argument via MCP.

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Pricing

Plan	Daily Limit	Monthly Limit	Price
Free	5 / day	50 / month	$0
Developer	20 / day	500 / month	$39
Professional	200 / day	5,000 / month	$99
Enterprise	100,000 / day	1,000,000 / month	$299

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About

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