: Most "leaked" lists found on public sites are "checked" and "dead," meaning the passwords have already been changed or the accounts have been banned by the provider.

: Sites offering these downloads are high-risk environments for malware, ransomware, and browser hijacks. The .txt file itself may be a disguised executable or contain links to phishing sites.

: The file format, usually containing a list of emails and passwords in email:password format (often called "combolists"). Important Safety and Security Risks

: Usually refers to the quantity (e.g., 10 account logins).