HARMONYLOGS Leak Targets 4,941 Users’ Emails and Passwords

HEROIC analysts discovered a stealer log batch called HARMONYLOGS, given away for free on a Telegram channel on June 21, 2026. The dump contains 4,941 records, each one lifted directly from an infected computer, pairing an email address with a saved website URL and its matching plaintext password.

Who HARMONYLOGS Is Putting at Risk

Stealer logs like this one do not target one company or one website. They target whoever happened to be logged in when the malware infected their device. That means the 4,941 people in this file could have accounts anywhere: email providers, shopping sites, banking portals, or work logins, all sitting in the same file for anyone who downloads it.

Because the log was labeled and shared as "free," it likely already spread further than a single Telegram channel, widenning the pool of people who could try these credentials.

What Was Exposed

• Email addresses
• Plaintext passwords
• Saved website URLs tied to each login

Why This Matters

When a password is stored in plaintext, there is no scrambling or hashing standing between the attacker and your account. Criminals routinely take files like HARMONYLOGS and run them through automated tools that test each email and password pair against banks, email providers, and social media platforms. This is called credential stuffing, and it is one of the fastest paths to account takeover, identity theft, and financial fraud.

If even one of the 4,941 people reused a password across two or three sites, the damage from this single leak multiplies quickly.

How Stealer Log Leaks Like This Happen

Infostealer malware infects a device through a fake software crack, a malicious ad, or a booby-trapped attachment. Once it is running, it quietly copies saved browser passwords, cookies, and autofill entries, then bundles everything into a seperate text file like this one.

Free stealer logs, like HARMONYLOGS, are often given away by less experienced criminals to build a reputation on Telegram before they start selling higher value logs. That makes free dumps some of the most widely shared and re-shared files in the whole underground economy.

Check If You Are Affected

If you recognize any of your accounts could be sitting inside HARMONYLOGS or another stealer log, don't leave it to chance. HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records to show you exactly where your data has appeared. Scan now and change any password that comes back exposed.