: A "solid" version of this list is usually de-duplicated and stripped of "junk" data (entries with no passwords, HTML tags, or non-US domains like .ru or .cn). If this list contains mostly .com , .net , and .org addresses, its utility for U.S. targeting is high. Security Implications
: In lists of this size, "hit rates" (valid logins) typically hover between 0.5% and 2%, depending on the age of the data. 570k USA COMBOLIST.txt
A "combolist" is a collection of breached username (or email) and password combinations. This specific file, totaling 570,000 entries targeted at U.S. users, is a significant aggregate often used for credential stuffing or security auditing. : A "solid" version of this list is
: It serves as a viable sample for testing the strength of a company’s password policies and checking if employees are reusing personal credentials on corporate systems. Security Implications : In lists of this size,
: With 570,000 lines, the list is substantial but not "massive" by modern standards (which often reach into the billions). However, its geographic focus on the USA makes it highly targeted for regional services.
: Do not use this for malicious purposes. If you are checking for your own data, use authorized services like Have I Been Pwned.
: The existence of such a list highlights the extreme danger of password reuse . If an account is in this list, it is likely already being cycled through automated bots. Final Verdict