If You Reuse Passwords, the KRDCLOUD Leak Should Worry You

HEROIC analysts identified a combolist uploaded to a Telegram channel in mid-July 2026 under the name "17343_Russia_KRDCLOUD." The file contains 17,313 records, each combining an email address with a plaintext password and the URL of the login page it works on.

Why the KRDCLOUD Leak Is Dangerous

Because every password in this file is stored as plaintext rather than encrypted, there is no barrier between the criminal holding the file and a working login. If you reuse the same password across multiple accounts, a single leaked pair from this file could open the door to your email, banking, or shopping accounts too.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs of the accounts each credential unlocks

Why This Matters

Attackers use lists like this one to run credential stuffing attacks, automatically testing each leaked email and password combination against dozens of popular websites. Password reuse is exactly what makes these attacks work. A password stolen from one site becomes the key to every other account where you typed the same one.

How This Combolist Was Put Together

The "KRDCLOUD" label in the file name suggests these credentials were pulled from or associated with a cloud service, then bundled with others into a combolist for distribution on Telegram. Combolists like this are rarely the result of a single hack. They are usually compiled from smaller leaks, malware infections, and old breaches, then packaged and dropped into channels where criminals can grab them for free or for a small price.

Check If You Are Affected

With 17,313 credential pairs now circulating, it's worth checking whether your email address is one of them. HEROIC's free breach scanner compares your email against more than 400 billion leaked records, including this combolist, so you can find out fast and change any passwords you've reused elsewhere.