The phrase "Private Duplicate Removed" is a marketing tactic used by data brokers to suggest the list is unique, high-quality, and hasn't been "burnt" (detected and blocked) by security systems yet. How These Lists Are Created
Enter your email to see if it appears in known public breaches. The phrase "Private Duplicate Removed" is a marketing
Use a password manager to ensure every site has a unique, complex password. Taking leaked data from one site and testing
Taking leaked data from one site and testing it against another (like Gmail). Using malware to grab passwords saved in browsers
This specific file name refers to a —a collection of over half a million email and password combinations (often called "combolists") frequently circulated in underground hacking forums and Telegram channels.
Exploiting vulnerabilities in website databases to export user tables.
Using malware to grab passwords saved in browsers. The Risks for Users