Free Dark Web Scan for Business
Enter your company domain to see how many employee and customer credentials have leaked. Our dark web scan for business checks billions of leaked credentials in seconds.
No Data Breach Detected
But You’re Not Exactly in the Clear
Data breaches aren’t slowing down. Verizon’s 2026 Data Breach Investigations Report covers more than 22,000 confirmed breaches. Ransomware was involved in 48% of those breaches. The average cost of a breach for a U.S. company hit $11.5 million (IBM). Monitor for exposed credentials before attackers exploit them.
Prevent Future Data Breaches With Breachsense
- Continuously monitor the dark web and hacker forums for your company name and your employees’ leaked data.
- Get webhook or email alerts when new leaks of your data surface.
- Find out when your executives show up on ransomware leak sites or hacker forums.
Over 42 billion
Leaked credentials indexed
100+
Ransomware groups tracked
Data Breach Detected
Employee credentials have an email address at your domain. Customer credentials are for accounts on your website.
It’s Time to Act
Book a demo with Breachsense. On the call, we search your domains and show you each leaked account, with its source and the date we found it.
Secure Your Breached Accounts
- Reset Every Password on an Infected Device. If an employee’s credential came from a stealer log, infostealer malware took every password saved in their browser. The median infected machine in our September 2026 infostealer report had 19 saved passwords stolen. A quarter of those machines had more than 61 saved passwords stolen.
- Revoke Active Sessions. Some stealer logs include session tokens. With a stolen token, an attacker can use the employee’s account without its password, a technique called session hijacking. A password reset doesn’t always sign the attacker out. Revoke the account’s sessions in your identity provider, such as Microsoft Entra ID or Okta.
- Reset Account Credentials for all compromised accounts.
- Turn On 2-Factor Authentication to prevent attackers from using leaked passwords.
- Use Unique & Strong Passwords. Make this a company-wide practice.
- Train Your Staff. Show employees how to spot the attacks that cause breaches.
- Always Use a Password Manager. Make this a company standard.
- Continuously Monitor for Data Breaches. Even if you do everything right, a vendor breach or malware on an employee’s home computer can leak work passwords. Breachsense lets you uncover data breaches as new leaks surface.
What Your Dark Web Scan Results Show
A scan of a company domain shows a “Results for” line with the domain, then two counts. In this example, 247 employee credentials leaked, each with an email address at the company’s domain. The 1,452 customer credentials are for accounts on the company’s website.
Our dark web scan for business checks leaked credentials from four sources. A third-party breach is when a service your staff use, such as a cloud app, gets hacked and its user data leaks. Combo lists are email and password pairs collected from earlier leaks. Attackers try each pair on other websites to find accounts where someone reused the password. Stealer logs contain the passwords that infostealer malware takes from an infected computer. Phishing kits collect the passwords people type into fake login pages.
Stealer logs, combo lists and passwords from phishing kits are indexed within hours of appearing on Telegram channels and criminal markets.
The free dark web scanner doesn’t list the accounts, or show where and when each one leaked. It also skips private sources, such as premium dark web markets and invite-only forums.
Results for ████████.com
247Employee credentials leaked
1,452Customer credentials leaked
Dark Web Scan vs Ongoing Dark Web Monitoring
Your scan results go out of date as soon as more of your company’s credentials leak.
Verizon’s 2026 Data Breach Investigations Report counted credential leaks at organizations hit by ransomware. Small organizations had a median of seven credential leak events in a year. For larger organizations, the figure was around 20.
Set up continuous dark web monitoring so you’re not running the same check every week by hand. A one-time scan misses the stealer log that comes out two days from now and the combo list posted next Tuesday. The scan also won’t tell you if one of your vendors shows up on a ransomware leak site next month.
We send alerts straight to your security tools by webhook, an automatic message from our server to yours. A SIEM (security information and event management) tool collects your alerts in one place. A SOAR (security orchestration, automation and response) tool acts on each alert automatically, for example by resetting a password.
| Free dark web scan | Dark web monitoring | |
|---|---|---|
| What you enter | One domain | Your domains, plus terms such as your company name or an executive’s personal email address |
| What you get | How many employee and customer credentials leaked | An alert for each leaked credential or file that matches your watchlist, with where and when we found it |
| When results update | Each time you run it | As we index new leaked data |
| Where results go | Your browser | Your SIEM or SOAR by webhook, or your team’s inbox by email. Your tools can also pull alerts from our API (application programming interface). |
The sample below shows leaked credentials from stealer logs for one domain, as your tools would pull them from our API. The passwords are masked.
$curl -H "lic: $BS_LIC" \
"https://api.breachsense.com/stealer?s=example.com"
HTTP/1.1 206 Partial Content · 4.2s · application/json
{ "results": [ { "usr": "k.becker@example.com", "pwd": "V••••••12", "mal": "StealC", "src": "confluence.example.com", "fnd": "20261023" }, { "usr": "t.nilsson@example.com", "pwd": "U••••••91", "mal": "Vidar", "ccn": "5188••••••••2470", "fnd": "20261023" }, { "usr": "legal@example.com", "pwd": "C••••••53", "mal": "StealC", "src": "salesforce.example.com", "fnd": "20261022" }, { "usr": "m.ahmadi@example.com", "pwd": "G••••••48", "mal": "Vidar", "cwa": "0xBe3a17…cD8f49A", "fnd": "20261022" }, { "usr": "ops@example.com", "pwd": "F••••••76", "mal": "StealC", "ccn": "4716••••••••5103", "fnd": "20261021" } ], "more": "864 more records · paginate via p=2" }
Detect Leaked Credentials
Scan criminal marketplaces and stealer logs for your organization’s exposed passwords. Discover compromised credentials before attackers use them to breach your network.
Enterprise Dark Web Scanning Service
Beyond credentials, we send an alert when your company shows up on a ransomware leak site or hacker forum.
See Which Accounts Leaked
The free scan counts your leaked credentials in seconds. With monitoring, the alert for each leaked account includes its password, or the password hash when we haven’t cracked it. You can then check whether the account still uses that password.
What is the dark web?
The dark web is a hidden part of the internet that can’t be accessed through standard search engines or browsers. It requires specialized software like Tor to access, allowing users to browse anonymously.
It’s primarily known for illegal activities including the sale of stolen data and hacking services. Because of its anonymous nature, the dark web attracts cybercrime. That’s why security teams monitor it for threats.
It’s primarily known for illegal activities including the sale of stolen data and hacking services. Because of its anonymous nature, the dark web attracts cybercrime. That’s why security teams monitor it for threats.
Protect Your Organization from Dark Web Threats
Dark Web Monitoring
Our most complete monitoring service. Track criminal marketplaces and hacker forums 24/7 for your organization’s exposed data. Get alerted when new credentials surface.
Learn MoreCompromised Credential Monitoring
Detect leaked employee and customer passwords across stealer logs and third-party breaches. Reset compromised accounts before attackers can exploit them.
Learn MoreHow to Find Data Breaches
Learn the methods security teams use to discover data breaches early. Understand where credentials are leaked and how to monitor for your organization’s exposure.
Learn MoreData Breach Detection
A practical guide to spotting data breaches early. Learn the warning signs that your data has been stolen.
Learn MoreDark Web Combo Lists
Understand what combo lists are and how attackers use them in credential stuffing attacks. Catch your credentials in these lists before they’re used.
Learn MoreDark Web Search Engines
How dark web search engines work, and how security teams use them to find leaked company data.
Learn MoreFrequently Asked Questions
Yes, a dark web scan is legit if it only searches leaked data and never asks for a password. The Breachsense scan asks only for a company domain. We check that domain against credentials that have already leaked in breaches, combo lists, stealer logs and phishing kits. We don’t store the domains you scan.
Yes. The dark web scanner on this page is free. When you enter a company domain, the scanner shows two counts. The first is leaked employee credentials, which have an email address at your domain. The second is leaked customer credentials, for accounts on your website. To see each leaked account and the source it leaked from, book a demo.
Partly. A dark web scan shows whether your company’s credentials have leaked. Your sign-in logs show whether an attacker signed in with those credentials. If the scan finds leaked credentials, book a demo to see which accounts they belong to. Check the sign-in logs for those accounts and turn on multi-factor authentication (MFA) for each one. Continuous dark web monitoring catches future leaks as they surface.
Run a dark web scan in three steps:
- Enter your company domain in the box at the top of this page.
- Read the two counts, one for leaked employee credentials and one for leaked customer credentials.
- Book a demo to see each leaked account, with its source and date.
A dark web scan for business counts the leaked employee and customer credentials for your whole company domain. Consumer scanners only check one email address.
Run our dark web scan with your company domain. You’ll see two counts right away, one for leaked employee credentials and one for leaked customer credentials. A demo shows each account and its source. To keep checking after the scan, set up dark web monitoring. We send an alert for each new leak we find, to your SIEM or SOAR by webhook or to your security team by email.
No. The scan only uses the domain you submit to look up leaked credentials in our index. We don’t store or sell the domains you scan.
An empty result means none of your domain’s credentials showed up in the sources the free scan checks. Private sources, such as invite-only forums, aren’t part of the free scan. For monitoring that covers private sources too, book a demo.
New stealer logs, combo lists and passwords from phishing kits reach our index within hours. We add third-party breach data once we’ve checked that the breach is genuine.
Have I Been Pwned (HIBP) lets anyone check an email address against known breaches. To search a whole domain on HIBP, you first have to prove you control it. Our scan checks any company domain, with no proof of control needed. HIBP doesn’t show the leaked password, so you can’t tell whether an employee still uses it. Our monitoring alerts include the password, or the password hash when we haven’t cracked it.
Old credentials that have already been reset still show up in our index because they’re still circulating in criminal markets. Attackers run credential-stuffing attacks using old combo lists against accounts that haven’t rotated. Each monitoring alert includes the date we found the credential, so you can compare that date with the account’s last password change. Continuous monitoring also lets you whitelist a username and password pair, so we stop sending alerts for that old password. A new password for the same account still triggers an alert.
The free scan checks one domain at a time. To monitor your subsidiaries’ or clients’ domains too, book a demo.
Reset passwords for every affected account first. Force MFA on those accounts if it’s not already enabled. Check each leaked account’s sign-in logs for unfamiliar sign-ins. If the source was an infostealer log, every other password saved in the infected employee’s browser leaked too. Set up continuous monitoring so you catch new exposed data as it’s indexed, not weeks later.
You should monitor your domains continuously, because new stealer logs and combo lists come out every day. Run the free scan once. Then set up dark web monitoring, so we send you an alert by webhook or email when we find new leaked credentials.