: They are primarily used by cybercriminals for credential stuffing attacks, where automated tools attempt to log into various websites using these stolen pairs.
: Their success relies on password reuse —the tendency for people to use the same login credentials across multiple platforms. Download 150k COMBO GOOD FOR EVERYTHING txt
If you are concerned your information might be in such a list, security experts from organizations like Norton and the NJCCIC recommend these defenses: : They are primarily used by cybercriminals for
: Downloading or possessing these lists can carry significant legal risks under data protection laws like the GDPR or the Computer Fraud and Abuse Act (CFAA) . Furthermore, these files often originate from untrustworthy sources and may contain malware. How to Protect Your Own Accounts Understanding Combo Lists
9 Best Practices for Preventing Credential Stuffing Attacks | CSA
A "150k Combo" refers to a , which is a text file containing approximately 150,000 combinations of stolen usernames or email addresses paired with passwords. These lists are typically aggregated from multiple third-party data breaches and shared or sold on the dark web and hacking forums. Understanding Combo Lists