Use reputable services like Have I Been Pwned to see if your email address has been included in known data breaches.
The attack relies on the fact that many people reuse the same password across multiple platforms. Download 476k Combolist txt
They are typically formatted as email:password or username:password . Use reputable services like Have I Been Pwned
Possessing or distributing stolen data can be a criminal offense under computer misuse laws in many jurisdictions. used for spam
Once a "hit" is found (a working login), the account is either drained of its value, used for spam, or sold on the dark web. The Risks of Downloading These Files
A "476k" list implies it contains approximately 476,000 unique credential sets. How They Are Used: Credential Stuffing