Large-scale leaks from websites where users' login information is compromised.
Using bots to test known passwords against different platforms to see where they work. 220k mail access valid hq combolist mixzip install
To understand the value and function of such a file, we have to look at each individual term: 220k mail access valid hq combolist mixzip install
Use services like Have I Been Pwned to see if your email address has appeared in any recent data breaches. 220k mail access valid hq combolist mixzip install
"Valid" suggests the list has been "checked" or "scrubbed" against live servers to ensure the passwords aren't expired. "HQ" stands for High Quality, usually meaning the data isn't "public" or "leaked" across every forum yet, which increases its success rate.
To simulate "credential stuffing" attacks for companies to help them strengthen their defenses.