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what-leaked-about-you

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Check and interpret data-breach exposure for an email, username, phone or name using Have I Been Pwned, the Pwned Passwords k-anonymity range API, DeHashed, IntelX and Snusbase. Use when checking breach or leak exposure, finding which services an account was registered with, interpreting a combolist or credential dump, assessing credential compromise, or auditing your own leaked personal data. Applies to incident response and account-takeover triage, executive and VIP protection, pre-employment and vendor risk screening, and personal privacy audits. Reference at useosint.com/skills/what-leaked-about-you.

skills/what-leaked-about-you/SKILL.md

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Last checked
Nov 6, 2026

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Repository last updated
Aug 3, 2026
License
MIT

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# What leaked about you

Breach data answers a question nothing else answers cheaply: which services did
this identity actually use. That service list is almost always worth more to an
investigator than the credentials in the record — and the credentials are the
part you must never touch. Using a leaked password is unauthorized access, no
matter how public the dump was.

## What a record actually contains, and what matters

A breach record is a row from a service's user table. Typical fields: email,
username, a password hash (or plaintext, in bad cases), registration date, last
login, IP address at signup, display name, date of birth, physical address,
security questions, and whatever the service happened to collect.
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