Using legitimate, aged email accounts to bypass spam filters when sending out malicious links.
This specific archive is marketed as containing 280,000 sets of credentials that have been verified ("valid") for IMAP/POP3 access. This means the credentials allow a third party to log directly into the victims' email accounts.
Gaining access to sensitive personal information or financial accounts linked to the email. 280K VALID MAIL ACCESS.rar
Testing these "valid" credentials against other services (like Netflix, Amazon, or banking portals) where users might reuse the same password. Security Implications
Allowing the original uploader to gain remote access to the researcher's or "leecher's" system. Risk Mitigation Using legitimate, aged email accounts to bypass spam
Malware designed to steal the credentials of the person downloading the file.
Such lists are primarily used by threat actors for: Risk Mitigation Malware designed to steal the credentials
The .rar extension indicates a compressed folder. Inside, the data is usually formatted as email:password in simple .txt files.