Hackers steal data from less secure forums or niche websites.
Use a trusted service like Have I Been Pwned to see if your email appears in any known data dumps. 269k (STEAM,NETFLIX,HUBO,EPICGAMES,PORNHUB...)...
This "269k" list refers to a high-profile collection of leaked user credentials—often called a "combo list"—circulating in cybersecurity circles and on the dark web. It typically contains email and password pairs intended for , where hackers use automated tools to try these logins across multiple popular platforms. The Breakdown of the "269k" List Hackers steal data from less secure forums or niche websites