Credential Leaks, Dark Web & Breach Response
A credential leak is the exposure of usernames and passwords — or email addresses paired with other personal data — from a compromised system. These records circulate across dark web forums, traded in bulk and sold individually. A single breach from years ago may still generate active account takeover attempts today.
What credential leak audits cover
Beyond traditional breach databases, our investigations include stealer log indexes — the live-traded credential market that Have I Been Pwned does not catalogue. Stealer logs circulate on Telegram channels and Russian Market with session cookies intact, which is why a clean HIBP result does not mean clean credentials.
- Email addresses and associated accounts in known breach datasets
- Credential pairs (email + password combinations) in traded data
- Stealer log exposure: credentials, session cookies, and autofill data exfiltrated by infostealer malware and traded on underground channels
- Paste sites and forum posts referencing specific names, emails, or organisations
- Dark web marketplace listings referencing company or individual data
- Historical breach data including breaches older than 5 years that remain in circulation
- Corporate data dumps: internal documents, directories, and credentials from ransomware exfiltration
- SIM-swap and account hijacking indicators
Credential leak investigation deliverables
A structured breach investigation report identifying which datasets contain your data, what fields are exposed, and the risk level by credential type. For organisations, the scope extends to former employee accounts that may retain access. Delivery within 48 hours.
Data Handling
All information you provide is used solely to conduct the requested investigation. Case findings are cryptographically deleted within 48 hours of delivery. We do not store, sell, or share client data. Full details: Data Purge Policy.
Our ethical framework: Ethics Code.