UP_KURZL0G Telegram Combolist Leak: 9.7 Million Credentials Exposed

In October 2025, a file started circulating on Telegram that most people will never hear about, unless their own information happens to be sitting inside it. Labeled UP_KURZL0G, this combolist quietly packed together 9,750,709 sets of email addresses and passwords, all sitting in plain, readable text for anyone who bothered to download it.

Why This Is Dangerous

Combolists like this one work differently than a typical corporate hack because the data has already been pulled together and organized for immediate use. There's no need for a criminal to break into anything else first, the login pairs are ready to go right out of the file. Because the passwords were stored in plaintext, whoever grabbed this list didn't even have to crack a hash or run any special software. They just opened it and started testing accounts. This kind of exposure has occured more times than most people realize this year alone.

What Was Exposed

• Email addresses tied to real, active user accounts
• Plaintext passwords, meaning no encryption stood between the data and whoever found it
• URLs revealing which sites or services the credentials were originally used to log into

Why This Matters

Almost 9.8 million records is a big enough number that the odds of your own email showing up somewhere in this list are higher than most people would like to admit. If you reuse a password across multiple accounts, one leaked combolist can definately unlock your email, your banking apps, and your social media all at once. Attackers don't need to guess, they just try the same password everywhere and wait for a hit.

How Combolist Leaks Work

A combolist isn't built in a single moment. It's usually stitched together from smaller breaches, malware infections, and older leaks that get recombined into one master file. In this case, the list was uploaded directly to a Telegram channel, a common gathering spot for criminals looking for quick, low-cost access to fresh credentials. Sometimes the emails and passwords come from stealer malware sitting quietly on infected computers, other times they're scraped from previously leaked databases and simply repackaged under a new name. Either way, once the file lands on Telegram, it can be downloaded and reused by anyone with a link, no hacking skill required.

Check If You Are Affected

You shouldn't have to guess wether your information is floating around in a file like UP_KURZL0G. HEROIC maintains a running database of more than 400 billion leaked records, including entries pulled from stealer logs and combolists exactly like this one, and our free scanner lets you check your email in seconds. It takes less than a minute, and if something turns up, you'll know exactly which passwords to change immediately before somebody else uses them first.