Organizations use tools to scan for these files to see if employee or customer credentials have been leaked.
There are specific scripts available on platforms like GitHub designed to help actors filter these massive "mixed" files by specific countries or remove duplicate entries. Risks and Prevention CombosCountrymix.txt
A "country mix" or "international" combolist pulls data from multiple regions rather than targeting a specific country. Organizations use tools to scan for these files
These lists are often aggregated from various sources, including old data leaks, phishing campaigns, and malware "stealer logs". including old data leaks
These help users create unique, strong passwords for every service, preventing a single leak from compromising multiple accounts.