1k_valid_mail_mixed.txt -

: If you downloaded this from an unknown source, be aware that "combo lists" are often bundled with malware or used as bait to infect the downloader's system.

: These files usually follow a user:pass or email:pass format. 1K : Represents the count of entries (1,000 lines). 1K_VALID_MAIL_MIXED.txt

These files are primarily used within the cybersecurity community for penetration testing or, more commonly, traded in "leaked" databases for unauthorized activities. : If you downloaded this from an unknown