LeakyCreds
NewInstant webhook alerts now available — notified within seconds of any credential detection.Learn more →

What This Scanner Does

The LeakyCreds credential exposure scanner checks whether email addresses or domains appear in credential leak datasets, stealer malware logs, and breach compilations circulating through underground markets and public leak sources. When you submit a domain or email, our system queries billions of exposed credential records to identify matches associated with your organization or personal accounts.

Our data sources include information-stealing malware logs extracted from families like RedLine Stealer, Lumma, Vidar, and dozens of other credential harvesters. We also monitor breach databases compiled from compromised services, paste site dumps, and credential collections shared across forums and marketplaces. This comprehensive coverage ensures visibility into exposure events that traditional breach notification services often miss.

Scan results help organizations identify compromised accounts early in the attack lifecycle, before credentials are weaponized for account takeover, business email compromise, or ransomware deployment. By detecting exposure at the intelligence stage rather than waiting for active compromise, security teams can rotate passwords, revoke sessions, and enforce multi-factor authentication while attackers are still acquiring or trading access credentials.

Common Use Cases

  • Security teams checking employee credential exposure – SOC and incident response teams use the scanner to quickly validate whether workforce credentials have been exposed in recent stealer log campaigns or breach publications, enabling rapid password rotation and session revocation.
  • Companies investigating phishing or account takeover incidents – When suspicious authentication activity is detected, security teams can determine whether exposed credentials contributed to the compromise and assess the scope of potential exposure across the organization.
  • SOC teams monitoring domains for stealer log exposure – Proactive monitoring helps organizations detect when employees fall victim to information-stealing malware, allowing intervention before attackers leverage the stolen credentials for deeper network penetration or data exfiltration.
  • Individuals checking personal email exposure – Personal users can verify whether their email addresses and associated credentials have been compromised in breaches or malware campaigns, prompting password changes and enabling account recovery before unauthorized access occurs.

Example Scenario

A financial services company runs a routine domain scan and discovers credentials for seven employees appearing in recently published stealer logs. The security team immediately identifies that these exposures originated from a Lumma Stealer campaign distributed through malicious software cracks.

Within hours of detection, the team forces password resets for all affected accounts, revokes active browser sessions, and enforces MFA re-enrollment. They also isolate the infected endpoints for remediation and block the malware delivery domains at the web gateway. By acting on exposure intelligence before attackers could leverage the credentials, the organization prevents potential account takeover, lateral movement, and data breach—avoiding what could have escalated into a major security incident.

Frequently Asked Questions

What data sources does the scanner use?

Our scanner aggregates data from multiple sources including stealer malware logs (RedLine, Lumma, Vidar, etc.), public breach databases, dark web leak repositories, and paste sites. We continuously monitor underground marketplaces and credential-sharing forums to provide comprehensive exposure coverage across billions of leaked credentials.

Does this mean my account is hacked?

Not necessarily. A positive result indicates that credentials associated with your domain have been exposed in a leak or breach, meaning they are accessible to potential attackers. It does not confirm active compromise, but it signals urgent risk that requires immediate password rotation, session revocation, and MFA enforcement to prevent unauthorized access.

How often are datasets updated?

Our intelligence feeds are continuously updated as new stealer logs, breaches, and leak sources are published. Critical stealer log collections are typically ingested within hours of publication, while breach databases are updated as new dumps become available. Subscribers receive real-time alerts when new exposures matching their domains are detected.

Is this scanner free to use?

Yes, our domain scanner is free for initial exposure checks. You can scan any domain to see if credentials have been exposed. For continuous monitoring, real-time alerts, detailed incident reports, and API access, organizations can upgrade to our enterprise platform with advanced threat intelligence and remediation workflows.