useu17 uploaded by a Telegram User Exposed 9,975 US Accounts

HEROIC analysts identified a combolist titled "useu17," uploaded to a Telegram channel on April 27, 2026. The file contained 9,975 records pairing email addresses with plaintext passwords, along with the URLs of the accounts they unlock, with United States accounts making up the exposure.

Why This US-Focused Combolist Is Dangerous

Because the passwords in this file are stored in plaintext, anyone who downloads it can read and use them immediately, without needing to crack or decrypt anything. The URLs included in the file tell an attacker exactly which website each email and password pair belongs to, making it simple to target United States accounts across multiple services at once.

What Was Exposed

• Email addresses
• Plaintext passwords
• Account URLs

Why This Matters

If your password appears in this list and you have reused it on other accounts, attackers can move from one exposed login straight into your email, banking, or social media. Combolists like this one power credential stuffing attacks, where automated tools test the same email and password pair against dozens of sites at once, leading to account takeover, financial fraud, or identity theft for anyone whose credentials still work.

How Combolists Work

A combolist pairs email addresses or usernames with matching passwords, usually pulled together from older leaks, phishing pages, or malware infections and organized into one file for easy reuse. Attackers favor combolists because they skip the difficult part of hacking entirely, simply feeding the list into automated tools that test each login until they find one that still works.

Check If You Are Affected

With 9,975 credential pairs now circulating, it takes only a moment to check your own exposure. HEROIC's free breach scanner searches more than 400 billion leaked records, including this combolist, so you can find out immediately if your email and password were exposed and secure your accounts before anyone else uses them.