The Comcast Valid Leak Put 141 Working Logins Online This Month

HEROIC analysts found a small combolist labeled "Comcast valid" uploaded to a Telegram channel on July 1, 2026. The file contains 141 records, each pairing an email address with a plaintext password and the URL it was used on, with the uploader claiming the logins are confirmed working Comcast accounts. Why This Is Dangerous: The word "valid" in the filename matters. It suggests these 141 credentials have already been tested and confirmed to work, meaning an attacker does not need to guess which logins are active, they can go straight to using them. What Was Exposed: Email addresses tied to Comcast accounts. Plaintext passwords. URLs identifying the login page each credential pair was captured from. Why This Matters: A working Comcast login can expose billing information, home internet account controls, and an email address that may be reused elsewhere. Because this list is small and marketed as pre-verified, the realistic risk per record is higher than in a large, unverified dump. How a Combolist Like This Gets Made: Small "valid" lists like this one are usually the result of an attacker running a larger batch of stolen credentials through an automated login checker, then keeping only the working results to sell or share as a higher-value, curated file on Telegram. Check If You Are Affected: HEROIC's free breach scanner checks your email against more than 400 billion exposed records. If you have a Comcast account, run a quick scan to confirm your login is not one of the 141 in this file.