A "combolist" is a simple text file formatted as username:password or email:password .

This report outlines the nature, risks, and security implications of leaked credential "combolists," specifically focusing on the mentioned collection of 117,000 North American ISP email accounts. 🛡️ Executive Summary

Primarily major US Internet Service Providers (ISPs) including Sbcglobal (AT&T) , Comcast (Xfinity) , Verizon , and AT&T .

These are rarely from the ISPs themselves. They usually come from smaller websites where users reused their ISP email and password. Volume: 117,000 sets of credentials. ⚠️ Primary Security Risks

Turn on Multi-Factor Authentication (App-based or Security Key is best).