: This label suggests the list is "private" (not yet widely circulated) or "targeted" toward specific high-value domains.

: Popular targets include e-commerce sites, streaming services, and banking portals. The Underground Economy of Combolists

: Sellers often provide "hits"—proof of working accounts—to increase the list's market value.

: Websites use CAPTCHAs and IP blocking to stop the automated tools that process these .txt files.

A guide on against these specific threats.

: Using a password manager ensures that a breach at one company does not compromise all other accounts.