Data Breach & Dark Web Monitoring Find leaked credentials in minutes, not months.

Breachsense is a data breach and dark web monitoring platform. We index stealer logs, combo lists, ransomware leak sites, and hacker forums for leaked data associated with your organization. Receive webhook or email alerts when your credentials or company data appear.

Full-text search across leaked ransomware files, unsecured databases, third-party breaches. REST API with webhook and email alerts. Plugs into your SIEM, SOAR, or ticketing workflow.
Book a demo → See the API
Dark Web Exposure Scanner
See if your data is on the dark web.
Find out how many of your employees and customers have been compromised.
Example output for ████████.com
247 employees exposed·1,452 customers affected
Trusted by enterprise security teams
PwC Trustwave Teachers Mutual Bank Swire Shipping Defense.com

Your Data Is Already on the Dark Web.

US data compromises
3,332+

reported breaches in 2025, a record year again.

ITRC · 2025
Mean time to detect
241

days the average enterprise takes to discover a breach on its own.

IBM Cost of a Breach · 2025
Cost per incident
$10.22M

or $1.9M less when discovered in under 200 days.

IBM Cost of a Breach · 2025

10 API endpoints.
One integration.

Every data type has its own dedicated endpoint. Credentials from stealer logs and combo lists, third-party breach data, leaked session tokens, non-human identities (API keys, OAuth tokens, AWS/GCP credentials), and dark web data (leaked files from ransomware attacks, threat actor chatter, leaked documents, attack surface assets). Query what you need. Get clean JSON back.

Push alerts into your existing security stack: SIEM, SOAR, ticketing, or password reset workflows. Set up in hours, not months. Or query from your terminal with the Claude Code plugin.

Every record shows where the data was found and when. No black-box matches.

Browse the documentation for details.

api.breachsense.com GET /stealer
$curl -H "lic: $BS_LIC" \
    "https://api.breachsense.com/stealer?s=example.com"
HTTP/1.1 200 OK  ·  3.4s  ·  content-type: application/json
{
  "results": [
    { "usr": "j.smith@example.com", "pwd": "S••••••24!", "mal": "RedLine", "src": "okta.example.com/login", "fnd": "20260415" },
    { "usr": "ops@example.com", "pwd": "P••••••88", "mal": "Lumma", "ccn": "4532••••••••1247", "fnd": "20260420" },
    { "usr": "k.chen@example.com", "pwd": "S••••24", "mal": "StealC", "cwa": "bc1qxy2k…4hsm9k", "fnd": "20260422" },
    { "usr": "r.diaz@example.com", "pwd": "•••••••", "mal": "Vidar", "pth": "%APPDATA%\Roaming\setup.exe", "fnd": "20260424" }
  ],
  "more": "1,243 more records · paginate via p=2"
}
→alerts: webhook + email
→query from any HTTP client (curl, Python, Go, …) or the Claude Code skill

Why Security Teams Choose Breachsense.

We monitor the dark web for leaked credentials, stolen session tokens, infostealer logs, and third-party breaches. When we find your data, you'll get an alert so you can respond before attackers exploit it.

Stealer logs

Credential-stealing malware like RedLine, Lumma and StealC parsed and indexed continuously as logs are uploaded.

Session tokens

Leaked session cookies that bypass MFA when used quickly. The credential resets your team did won't help here.

Ransomware leak sites

Full data dumps from 100+ ransomware groups, parsed for your domains, employees and customers.

Hacker forum access

Russian-language hacker forums, invite-only criminal communities, and Telegram channels where credentials are sold before they're dumped.

How Breachsense Protects You.

Catch breaches early

Companies using security AI and automation save an average of $1.9 million per breach (IBM 2025). Catch compromised credentials before attackers use them to access your network.

Keep customer trust

66% of consumers wouldn't trust a company after a data breach. Stop attacks before they become headlines and protect the reputation you've built.

Automate your response

Connect breach alerts to your SIEM and SOAR tools. Trigger automated password resets and access revocation the moment credentials are compromised.

Breachsense Is Perfect For

Security Operations
Monitor credentials and session tokens across every domain you defend.
Incident Response
Pivot from one compromised account to every related exposure fast.
Managed Security Providers
Multi-tenant exposure data for every customer domain you protect.
Security Vendors
Embed breach intelligence into your platform via our public API.
Penetration Testers
Surface valid credentials for initial access on red team engagements.

Frequently Asked Questions

Data breach monitoring scans the dark web and breach databases for your exposed data. You can respond the moment a data breach happens instead of finding out months later. According to IBM’s 2025 Cost of Data Breach Report, companies using security AI and automation save an average of $1.9 million per breach. Early detection gives you time to reset passwords before attackers exploit them.
A data breach can cost millions and destroy customer trust. IBM’s 2025 report puts the average cost of a US data breach at $10.22 million, an all-time high. 66% of consumers say they wouldn’t trust a company after a breach. Monitoring lets you catch exposed credentials and stop account takeovers before they do real damage.
Breached password detection checks your employees’ credentials against known data breaches. If any passwords have been leaked, you’re alerted so you can reset them right away. You can use our free dark web scanner to check if your data has been breached.
The most common causes of data breaches are stolen credentials, backdoors, social engineering, and unpatched applications. Verizon’s 2025 DBIR confirms stolen credentials are still the #1 initial access vector in breaches. Data leak monitoring and compromised credential monitoring let you catch exposed credentials before attackers use them.
Detecting a data breach takes continuous monitoring of hacker forums and ransomware channels for compromised data. When you track leaked credentials and company data continuously, you catch breaches early. Data breach detection software automates this and alerts you the moment your information appears in a new breach.
Breachsense continuously monitors the dark web for breached data tied to you. You’re notified the moment your credentials or company data surface. This lets you respond quickly and prevent account takeovers and unauthorized access. Our breach protection platform integrates with your existing security tools for automated response.
Very common. According to the ITRC, 2025 set a new record with 3,332+ data compromises in the US alone, up 4% from 2024. At this point, it’s not a matter of if you’ll be breached, but when. Continuous dark web monitoring and a breach protection platform help you catch breaches before attackers act.