These are compiled from multiple historical data breaches and sold or shared in the criminal underground for brute-force attacks.
The .zip file itself often contains an executable (.exe) or a script masquerading as a text file. Running these will compromise your own computer. Download 517K PRIVATE COMBOLIST EMAILPASS zip
Use reputable services like Have I Been Pwned to see if your data has been compromised in known breaches. These are compiled from multiple historical data breaches
Some of these lists are monitored by security researchers or law enforcement to track individuals attempting to engage in credential stuffing. How to Protect Yourself Use reputable services like Have I Been Pwned
A "combolist" is a text file containing massive lists of username/email and password combinations, usually formatted as email:password .
If you are concerned your own email is on one of these lists:
Combolists and ULP Files on the Dark Web: A Secondary ... - Group-IB