A is a structured text file containing large sets of stolen usernames or email addresses paired with passwords. These lists are primarily used by cybercriminals for credential stuffing attacks , where automated tools systematically test leaked login pairs against various websites, betting that users have reused the same password across multiple platforms.
: Possessing or sharing combolists containing unauthorized credentials is illegal under international data protection laws like the GDPR or the Computer Fraud and Abuse Act (CFAA).
Combolists and ULP Files on the Dark Web: A Secondary ... - Group-IB