DNS Combolist File Leaks 1,447 Plaintext Email Logins Today

A file uploaded to a Telegram channel in October 2023 turned out to hold 1,447 sets of email addresses, plaintext passwords, and the URLs they belonged to, all bundled together as a single combolist. HEROIC analysts catalogued the file after it began circulating, and its contents are now searchable. The quickest way to know if you are in it is to scan your email.

What Makes This File Risky

Files like this one are traded specifically because they save attackers the step of cracking anything. Each of the 1,447 entries already pairs a working password with the address and site it unlocks, so automated tools can start firing login attempts the moment the file changes hands.

What Was Exposed

• Email addresses, the anchor point attackers use to look up everything else tied to a person.
• Plaintext passwords, ready to use without any additional effort.
• URLs, showing exactly which service each login was captured from.

Why This Matters

Anyone whose email turns up in this file should assume that specific password is burned, not just on the site it came from but anywhere else it was reused. Account recovery flows built around that email address are also at risk, since a working password plus inbox access can be enough to reset other accounts entirely.

How This Breach Type Works

Combolists like this one are compiled, not stolen from a single victim organization. Criminals pull matching credential pairs out of older leaks, phishing hauls, and infected devices, then merge them into one list sorted for resale. That means the 1,447 records here likely came from several different original sources, not one company's systems.

Was Your Email Inside This File?

Run a scan your email check to see if your address is one of the 1,447 in this combolist. If it turns up, treat the password as compromised everywhere you have used it, not just on the original site, and update it right away. The same advice holds whether the affected inbox is personal or a work account, since both are equally usable to an attacker holding this file.