Data Breach & Dark Web Monitoring Find leaked credentials in minutes, not months.
The API that finds your leaked credentials, session tokens, and company data across the dark web.
58,386,962,480
Leaked credentials indexed
26,063
Ransomware victims tracked
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
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
Catch it in under 200 days and save $1.1M.
IBM Cost of a Breach · 2025
10 API endpoints.
One integration.
Every data type has its own dedicated endpoint. Stolen credentials, session tokens, machine identities, dark web data, and attack surface assets. Query what you need. Get clean JSON back.
Push alerts into your existing security stack: SIEM, SOAR, ticketing systems, 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.
See the documentation for details.
$curl -H "lic: $BS_LIC" \
"https://api.breachsense.com/stealer?s=example.com"
HTTP/1.1 206 Partial Content · 3.4s · application/json
{ "results": [ { "usr": "k.becker@example.com", "pwd": "V••••••12", "mal": "Lumma", "src": "confluence.example.com", "fnd": "20260609" }, { "usr": "t.nilsson@example.com", "pwd": "U••••••91", "mal": "RisePro", "ccn": "5188••••••••2470", "fnd": "20260605" }, { "usr": "legal@example.com", "pwd": "C••••••53", "mal": "Atomic", "src": "salesforce.example.com", "fnd": "20260601" }, { "usr": "m.ahmadi@example.com", "pwd": "G••••••48", "mal": "RedLine", "cwa": "0xBe3a17…cD8f49A", "fnd": "20260528" }, { "usr": "ops@example.com", "pwd": "F••••••76", "mal": "MetaStealer", "ccn": "4716••••••••5103", "fnd": "20260524" } ], "more": "1243 more records · paginate via p=2" }
Stop attacks before they hit your network.
Catch breaches early
Find leaked credentials hours after they appear in infostealer logs. Reset passwords before attackers use them to log in.
See third-party exposure
Watch ransomware leak sites and Russian-language hacker forums for your stolen data. When a vendor breach exposes you, you'll know as soon as the data is leaked.
Automate your response
REST API with webhook and email alerts. Push alerts into your SIEM or trigger password resets the moment a credential appears.
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.
Breachsense monitors infostealer logs for session cookies and NHI (non-human identity) tokens published by malware like RedLine and Lumma. When an attacker replays a leaked session token, MFA doesn’t trigger. The system thinks the user already authenticated. Catching the token before it’s used lets your team invalidate the session before the breach happens.
Breachsense watches 100+ ransomware leak sites and Russian-language hacker forums for stolen data from your vendors and partners. When a vendor gets breached and your data leaks with it, you find out from us before the vendor’s disclosure. That’s often weeks before the breach goes public.