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What Pen Testers Get From Breachsense

  • Plaintext passwords from third-party breaches, combo lists, and infostealer logs. Where possible, hashed passwords are cracked before they reach you.
  • Session tokens harvested by infostealer malware. Bypass MFA on assumed-breach engagements without phishing employees.
  • Non-human identity credentials. API keys, OAuth tokens, and service account secrets pulled from stealer logs. Long-lived, rarely rotated, often with broader permissions than user accounts.
  • Full-text search across leaked files from ransomware attacks. Find sensitive client documents that already leaked publicly.
  • Hacker forum mentions of your target. Know if access to the target network is being sold before you start the engagement.
  • RESTful API with 10 endpoints. Search by username, email, password, domain, IP address, or hardware ID. JSON responses fit any automation workflow.

Built for Red Teams, Pen Testers, and Offensive Security

Skip Hash Cracking Entirely

Query a target domain and get plaintext passwords in seconds. Hashcat and John the Ripper take hours or days. Breachsense returns credentials that already leaked, already cracked. Spend your engagement time on lateral movement, not wordlists.

Demonstrate Real Client Risk

Pull live leaked credentials for prospect or client domains before the engagement starts. Showing actual exposed passwords beats theoretical risk every time. Turn your scoping calls into proof-of-value demos.

Automate via RESTful API

Build credential lookups into your engagement playbooks. The REST API returns JSON, so you can script bulk queries across target assets. The Claude Code plugin lets you query in plain English from your terminal.
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Who Uses Breachsense Data?

"Offensive security" covers more than red teamers. Here's how four common security roles use the same Breachsense data, and what each one tends to need most.

  • Pen Testers

    External and internal engagements

    Pull leaked credentials for the target domain during scoping. Turn theoretical risk into a live demo before the contract is signed. Use real passwords during the engagement instead of burning days on hash cracking.

    What they use:
    Plaintext passwordsScoping-call demoslive dark web scan
  • Red Teams

    Long-running, stealth-first operations

    Skip the noisy parts of the kill chain. Test leaked credentials and session tokens against VPN portals and SaaS logins before touching exploits. Hunt for API keys and OAuth tokens that bypass MFA entirely.

    What they use:
    Session tokensNHI credentialscredential reuse testing
  • Purple Teams

    Joint offense-and-defense exercises

    Run realistic credential-based attack scenarios and validate that your detections catch them. Use the same data that actual attackers buy, so your tabletop exercises stop being theoretical.

    What they use:
    Attack-scenario datadetection validationAPI for automation
  • Blue Teams

    SOC analysts and threat hunters

    Know what attackers already have on your organization. Reset compromised accounts before someone uses them. Hunt for leaked machine credentials that no one's rotated.

    What they use:
    Domain monitoringSIEM webhookscredential monitoring

How Pen Testers Use Breachsense

Query the Target Domain

Get Plaintext Credentials

Test Credential Reuse

Prove Real Impact

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Frequently Asked Questions

Yes, when you have written authorization from the client. Your engagement contract should explicitly allow testing with compromised credentials found in third-party breaches. Always document the source of credentials and get proper scope approval. Refer to NIST SP 800-115 for pen testing authorization guidelines.
Red teams query target employee credentials from recent breaches and test password reuse across VPN and email systems. They use valid credentials instead of exploiting vulnerabilities. This mirrors how actual intrusions happen. You’ll query the Breachsense API by target domain to find leaked passwords, then test those credentials against exposed services.
You get plaintext passwords, session tokens, and metadata about where the credential leaked. Hashed passwords get cracked before they reach you. Stealer logs include the URL the credential was saved against, so you know if it’s for a VPN portal, email system, or SaaS app. Session tokens come with cookie data ready to inject via Burp Suite or your proxy of choice.
Hashcat and John crack hashes you captured during an engagement. Breachsense returns credentials that already leaked elsewhere and were cracked by others. If the target’s credentials appeared in any previous breach, you skip the cracking step entirely. The two tools complement each other. Use Breachsense first for known-leaked credentials, then crack anything new you capture.
Yes. The REST API returns JSON, so you can script bulk credential lookups across target assets. Build it into your recon scripts, your Burp Suite extensions, or your custom red team tooling. The Claude Code plugin lets you query in plain English from your terminal during live engagements.
Stealer logs typically appear within hours of the malware operator posting them. Third-party breach data appears as it’s indexed, which is usually within days of public disclosure. For active engagements, fresh data matters because credentials that leaked last week are more likely to still work than credentials from years ago.
Vulnerability scanning finds known weaknesses in services. Credential-based pen testing uses valid logins to access systems the way real attackers do. According to Verizon’s 2025 DBIR, 88% of web app breaches involve stolen credentials. Real leaked passwords show client risk better than theoretical vulnerabilities.
Yes. Stealer logs capture saved credentials of every kind, including API keys, OAuth tokens, AWS access keys, and service account secrets. Pen testers go after these because they rarely rotate, they bypass MFA by design, and they often hold broader permissions than user accounts. Query by target domain and Breachsense returns machine credentials alongside user passwords.

Pen Testing Resources

Dark Web API

REST API documentation for credential lookups, session token searches, and full-text search across leaked files. Your starting point for any automation.

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Compromised Credential Monitoring

How Breachsense tracks leaked credentials across breaches and stealer logs. Background on what data feeds your engagements.

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Infostealer Channels

How stealer logs reach the dark web and what data they contain. Useful context for explaining client risk during reports.

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Claude Code Plugin

Query Breachsense from your terminal in plain English. All endpoints loaded as a skill for live-engagement investigations.

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API Workflows and Use Cases

Endpoint-by-endpoint workflow patterns for credential monitoring, session token detection, and vendor exposure checks.

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Dark Web Monitoring

How Breachsense monitors criminal marketplaces and forums. The data layer underneath every pen testing query.

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Threat Actor Channels

Hacker forum and Telegram channel coverage. Where access to target networks gets bought and sold.

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Pricing

Plans for individual pen testers, red teams, and consultancies. Per-domain pricing fits project-shaped usage.

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Stop Cracking Hashes. Start Querying Real Credentials.

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