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What is Dark Web Monitoring?

Attackers don’t break in anymore. They log in. Stolen credentials and leaked session tokens trade on hacker forums and Telegram channels every hour, often weeks before the source company knows it’s been hit. By the time you spot the breach in your own logs, the same login has already been resold to three other buyers.

What We Monitor:

• Compromised Credentials: Leaked usernames and passwords from data breaches and combo lists
• Session Tokens: Leaked session tokens that let attackers bypass Multi-Factor Authentication (MFA)
• Non-Human Identities: API keys, OAuth tokens, and service account secrets harvested from infostealer logs. Long-lived, rarely rotated, and often hold broader permissions than user accounts
• Infected Devices: Infostealer malware infections exposing corporate data through infostealer channels
• Third-Party Breaches: Vendor breaches affecting your data through supply chain compromises
• Criminal Chatter: Discussions on dark web forums about your organization

Why It Matters:

By detecting these signals early, you can reset passwords, rotate keys, and terminate sessions before attackers exploit the data. Dark web monitoring alerts your security team the moment your data appears.

Why Dark Web Monitoring Matters for Businesses

Continuous Breach Detection and Prevention

Automatically monitor dark web markets and ransomware leak sites for compromised credentials. See how our tracker indexes breach data or read our dark web monitoring methodology. Get alerted when your data appears so you can reset passwords while you still have time.

Easy Integration with Your Security Stack

Integrate cyber threat monitoring into your SOC and SIEM platforms through our Dark Web API. Push alerts into Splunk, Sentinel, or your SOAR. Trigger automated password resets and session revocations the moment compromised credentials surface.

Alerts via Webhook or Email

Get webhook or email alerts when leaked credentials or session tokens appear on the dark web. Reset passwords and revoke sessions before attackers use them.
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Who Uses Breachsense for Dark Web Monitoring?

Dark web monitoring looks different depending on what you defend. Here's how four common teams use Breachsense, what data they care about, and which features pull the most weight.

  • Enterprise SOC

    Fortune 500 security teams

    Monitor employee credentials and vendor exposure across your supply chain without flooding your SIEM with noise. Webhook alerts arrive with enough context that Tier 1 can act without escalating.

    What they use:
    Session token detectionhacker forum coverageSIEM webhooks
  • MSSP / MSP

    Service providers managing multiple clients

    Deliver dark web monitoring across your client base with per-tenant isolation. Show prospects their own leaked credentials live on a sales call.

    What they use:
    Multi-tenant APIper-client alert routingMSP plans
  • Mid-Market Security

    In-house SecOps with a small team

    Get exposure alerts the same hour leaks land, not 200 days later in a breach notification. Continuous credential and infostealer log coverage without staffing a 24/7 SOC.

    What they use:
    Credential monitoringinfostealer logsemail + webhook alerts
  • Pen Test / Red Team

    Offensive security firms

    Query the API on demand for valid credentials against in-scope target domains. Fast, accurate responses with plaintext data when it's available.

    What they use:
    Full API accessinfostealer log searchstealer log data

Dark Web Monitoring vs Your Existing Security Stack

Your SIEM watches logs from your own network. EDR catches suspicious endpoint behavior. Threat intelligence platforms track strategic trends across the broader attack landscape. None of these tell you what data about your company has surfaced on networks you don’t control. That’s what dark web monitoring does.

The practical workflow: dark web monitoring detects that an employee’s password has shown up on a combo list. Your team resets the password. Hours later, an attacker tries that credential against your SSO portal. Your SIEM sees the failed login attempt. Because you already reset the password, the attempt fails and no one logs in. Without dark web monitoring, the attacker logs in successfully and you’re relying on your EDR to spot the suspicious behavior post-login.

Dark web monitoring lives upstream of your other controls. It tells you what information attackers will have about your organization, before they use it. For a deeper read on how it works and what to look for in a vendor, see our complete dark web monitoring guide.

How Does Breachsense Monitor the Dark Web?

Add Domains & Employee Emails

We Scan the Dark Web

Get Webhook or Email Alerts

Reset Credentials Before Use

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Frequently Asked Questions

Your SIEM and EDR watch what happens on your own network. Dark web monitoring watches what’s appearing about you on networks you don’t control. By the time a leaked credential shows up in your SIEM as a suspicious login attempt, the attacker already has access. Dark web monitoring catches that credential the moment it leaks, so you can reset the password before the suspicious login ever happens. It lives upstream of your other security controls.
Alerts come as a JSON webhook to your SIEM or SOAR, or as an HTML email to your security team. Each alert names the affected user, the type of leaked credential or token, the source where the leak appeared (combo list, infostealer log, breach dump, or leaked files from ransomware attacks), the first-seen timestamp, and contextual data like the infostealer family or breach name. The Dark Web API lets you route different alert types to different destinations.
Ask the vendor to run a live search on your own domain during the demo, not a canned example. Ask which sources they collect directly versus license from a third party. Licensed feeds add latency because the vendor only sees what the upstream source decided to publish, when they decided to publish it. Then ask for the first-seen timestamp on each result. Coverage claims that sound identical in marketing often differ by days or weeks in practice. Breachsense publishes its collection methodology so buyers can compare apples to apples.
Infostealer logs land in Breachsense within hours of the credentials appearing on Telegram channels or criminal markets. Combo lists are indexed as they’re posted. Third-party breach dumps appear as they become available, which depends on when the source publishes them. Each alert includes a timestamp so you know exactly how recent the data is.
Alerts include the source date and full context (infostealer infection details, breach name, source type) so your SOC can quickly determine if a credential is from a known, already-handled exposure or a new leak. The API lets you filter or suppress alerts tied to specific sources or timeframes. We don’t auto-suppress duplicates because credentials often appear in multiple data sources.
Most teams have webhook alerts flowing into their SIEM or SOAR within a day of getting API access. Adding the domains and email patterns you want monitored usually takes another day. Tuning alert routing and response playbooks happens over the first few weeks as you see what your actual exposure looks like.
The most common is account takeover from leaked credentials sitting on combo lists or infostealer logs. Session hijacking is another, where stolen cookies let attackers skip the login process entirely. Supply-chain breaches surface when a vendor’s breach leaks your stored data. Catching any of these early lets you reset the affected credential and revoke active sessions before the leaked data gets used.
Reset the affected credential first, then revoke any active sessions tied to that account. Check your authentication logs for unauthorized access during the window the credential could have been used. Infostealer infections typically expose every saved credential on the infected device, so the alert you got is rarely the only exposed credential from that user.
Corporate by default. Monitoring is scoped to the domains and email patterns you configure. Personal email exposures only surface when they appear in a corporate context. For example, an employee’s personal email used as a recovery address for a corporate SSO account, or a personal email appearing in a stealer log alongside corporate credentials from the same infected device.
Run our dark web scan on your corporate domain. You’ll see a summary of what’s already exposed across third-party breaches, combo lists and stealer logs. The scan is a one-time snapshot. For ongoing coverage with detailed webhook or email alerts as new leaks appear, book a demo.

Essential Dark Web Monitoring Resources

Dark Web Search Engines

Our #1 most-read guide. Learn how dark web search engines work and how cybersecurity professionals use them to find leaked data.

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Free Dark Web Exposure Scan

Check if your organization’s credentials have been compromised. Get instant results from our database of billions of leaked records.

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Dark Web Monitoring Guide

How to set up dark web monitoring, including best practices and integration strategies.

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Is Dark Web Monitoring Worth It?

Cost-benefit analysis of dark web monitoring services. Learn why early detection saves millions compared to breach response costs.

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Dark Web API

Automate threat detection by integrating our API into your security stack. Get webhook alerts when your data appears on the dark web.

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Compromised Credential Monitoring

88% of web app breaches involve stolen credentials. How to detect and reset compromised passwords before attackers exploit them.

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Data Breach Monitoring

Continuously watch breach databases and criminal channels for your exposed data so you can respond the moment a breach surfaces.

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Credential Monitoring Alternatives

How different platforms handle credential monitoring. Compare coverage, data freshness, and integration before you buy.

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Dark Web Monitoring Tools

Compare the best dark web monitoring tools and platforms. Features, pricing, and implementation guidance for security teams.

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Dark Web Markets

Understand where stolen data is bought and sold. Learn about the criminal marketplaces that drive cybercrime economics.

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Dark Web Identity Theft

How cybercriminals use stolen credentials for identity theft and account takeovers. Prevention strategies and detection methods.

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Compare Monitoring Approaches

Manual monitoring vs threat intel feeds vs automated platforms. See how each approach compares on speed, coverage, and team effort.

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Detect Breaches in Real Time - Start Monitoring Today

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