Finding your email on a 310k mixed list means your credentials were likely part of a past data breach.
Cybercriminals use automated to feed these lists into login pages of popular sites. Download 310k mixed combolist txt
: Immediately change passwords for any accounts identified in a leak. Combolists and ULP Files on the Dark Web - Group-IB Finding your email on a 310k mixed list
: These are often a "Compilation of Multiple Breaches" (COMB), where attackers aggregate data from various historical leaks (e.g., LinkedIn, Dropbox, Adobe) into a single file. Download 310k mixed combolist txt
: Validated accounts (called "hits") are then sold on underground forums or Telegram channels . Risks and Security Implications
: Multi-factor authentication is the most effective defense against credential stuffing.