Trusted by enterprise security teams
PwC Trustwave Teachers Mutual Bank Swire Shipping Defense.com

What is Data Leak Monitoring?

The average company doesn’t identify and contain a breach for 241 days, according to IBM’s 2025 Cost of a Data Breach Report. That’s roughly eight months of attackers reading email and selling credentials before any internal alert fires. Most of those signals show up on hacker forums or in stealer logs weeks before they ever touch your network logs.

Breachsense tracks hacker forums, Telegram channels, ransomware leak sites, and infostealer logs. We crack hashed passwords to plaintext so you know exactly what’s exposed. Coverage extends to machine credentials too. API keys, OAuth tokens, and service account secrets get harvested from infected employee devices alongside user passwords. You can search by email, domain, or company name and get results across all your monitored assets.

With leak monitoring, you’ll know within hours instead of months. Breaches caught early cost about $1.1 million less than those found late, per the same IBM report.

Why do you need data leak monitoring?

Stop Credential Theft

88% of web app breaches involve stolen credentials (Verizon’s 2025 DBIR). Monitor for leaked passwords and session tokens across dark web marketplaces before attackers exploit them.

Detect Leaks Early

Get webhook or email alerts when your data appears on the dark web. Respond before attackers exploit the data to prevent account takeovers and fraud.

Reduce Breach Costs

Breaches caught early cost about $1.1 million less than those found late (IBM’s 2025 Cost of a Data Breach Report). Reset passwords and revoke access before attackers exploit your data.
Book a demo

Who Uses Data Leak Monitoring?

A data leak alert means something different to each team that gets it. Here's how four common buyers use Breachsense, and which surface matters most to each one.

  • INSIDER RISK

    Insider risk teams

    Catch proprietary documents and source code the moment they appear on a paste site, hacker forum, or a vendor's ransomware leak page.

    What they use:
    full-text search on leaked fileshacker forum coveragecustom keyword alerts
  • M&A DUE DILIGENCE

    M&A due diligence teams

    Know what's already leaked before you close a deal. Stolen credentials, exposed code, and past ransomware incidents all change valuation.

    What they use:
    One-time domain scansvendor and subsidiary lookupsleak file search
  • LEGAL & COMPLIANCE

    Legal and compliance

    Provide defensible evidence that your team detected leaks quickly. Time-stamped alerts support GDPR, SEC cyber rule, and similar notification windows.

    What they use:
    Time-stamped alertsaudit-friendly API logsleaked file evidence
  • SECOPS / IR

    SecOps incident response

    Get answers during triage. Pivot from one indicator across the dataset and feed your SOAR playbooks while the incident is still unfolding.

    What they use:
    Webhook alertsinfostealer pivotssession token detectionfull API access

How Does Breachsense Detect Data Leaks?

Add Domains & Employee Emails

We Scan Dark Web Sources

Get Fast Leak Alerts

Reset Credentials Fast

Book a demo

Frequently Asked Questions

Data leak monitoring scans the dark web for your exposed credentials, session tokens, and internal documents. It tracks criminal marketplaces, hacker forums, and paste sites for your data. When something appears, you get an alert so you can reset passwords and revoke access before attackers exploit it.
You add your domains and assets to the platform. Breachsense then scans IRC and Telegram channels, private cybercrime communities, and ransomware leak sites for matches. It monitors for employee credentials, C-level executive accounts, remote access credentials (SSH, RDP, FTP), and internal documents. When your data appears, you get an alert with details on what was exposed.
Breachsense monitors hacker forums, criminal marketplaces, Telegram channels, ransomware leak sites, paste sites, and infostealer logs. We also index leaked files from ransomware attacks so you can search for your company name or employee names in vendor breach dumps. Hashed passwords are cracked to plaintext so you know exactly what’s at risk.
Breachsense detects leaked data quickly after it appears on monitored sources, with webhook or email alerts firing as soon as a match is indexed. The average company takes 241 days to identify and contain a breach without external monitoring. According to IBM’s 2025 Cost of a Data Breach Report, breaches caught early cost about $1.1 million less than those found late. Faster detection means less time for attackers to exploit your data.
No. A data leak is an unauthorized release of confidential data, often accidental. Leaks happen through misconfigured databases, human error, or insider actions. A data breach involves deliberate unauthorized access where attackers compromise systems to steal information. Both expose your data, but the cause is different. You need monitoring for both to stay protected.
Reset the compromised passwords right away. If session tokens were leaked, revoke them so attackers can’t bypass MFA. Check what else was exposed: internal documents, customer records, or access credentials. Notify affected parties if required. Then investigate how the leak happened. Was it a vendor breach? A misconfigured database? An employee reusing passwords? The answer tells you what to fix.

Essential Data Leak Prevention Resources

Data Breach Monitoring

Continuous monitoring for breaches affecting your organization. Get alerted when your data appears in third-party breaches or dark web leaks.

Learn More

Compromised Credential Monitoring

Monitor for leaked employee and customer passwords across the dark web. Reset credentials before attackers exploit them in stuffing attacks.

Learn More

Dark Web Monitoring

Track criminal marketplaces and hacker forums where leaked data is sold. Detect exposed credentials and company data before attackers use it.

Learn More

Check Your Exposure

Free scanner to check if your organization’s credentials are on the dark web. See what leaks have exposed your data instantly.

Learn More

Data Leak Guide

How data leaks happen, common causes, and steps to protect your organization from exposure.

Learn More

Data Leak Prevention

Strategies to prevent data leaks before they happen. Implement security controls to stop accidental and intentional data exposure.

Learn More

Data Leak Detection Software

Compare the best data leak detection tools and software. Capabilities and implementation guidance for security teams.

Learn More

Credential Stuffing Attacks

Learn how attackers use leaked credentials in automated stuffing attacks. Understand the methodology and how to defend against it.

Learn More

Data Breach Mitigation

Immediate steps to take after discovering a data leak or breach. Minimize damage and prevent further exposure.

Learn More

Detect Data Leaks Before Attackers Exploit Them

Book a demo