: They are used in credential stuffing attacks, where automated software tests these millions of pairs against other websites (like banks or social media) to find accounts where users have reused passwords. Risks of Downloading Description Malware Infection
A is a plain-text file containing pairs of usernames or email addresses and passwords, typically in an email:password format.
Possessing or distributing unauthorized credentials is illegal under laws like the or GDPR . Unreliable Data
These lists are often "recycled" or "stale" data from years ago, repackaged with "fresh" or "premium" labels to trick low-level hackers or attract downloads. How to Protect Yourself If you are concerned your own data is in such a list:
: In cybercriminal communities, "hits" refer to credentials that have already been verified as working on specific platforms.