If You Reuse Passwords, the updh1 3048 Leak Should Worry You

The updh1 3048 Bonus Logs Stealer Log Exposes 17,903 Records

HEROIC analysts tracked a large stealer log, referred to as updh1 3048 BONUS LOGS, that a Telegram user uploaded on 14 Jun 2026. The file contains 17,903 records, each pairing an email address with a plaintext password and the URL of the login page it belongs to.

Why This Is Dangerous

At nearly 18,000 records, this log gives an attacker a large, ready-to-use list of working email and password combinations, all in plaintext, all matched to the exact site they unlock. That scale makes it attractive for automated attacks that can test thousands of logins in a short amount of time.

What Was Exposed in the updh1 3048 Bonus Logs

• Email addresses
• Plaintext passwords
• URLs of the associated login pages

Why This Matters

If you reuse passwords across multiple accounts, a log this size is exactly the kind of file that puts you at risk. Attackers run credential stuffing scripts that automatically try each of the 17,903 email and password pairs against banking sites, email providers, and shopping accounts. A single match can lead to account takeover, and from there to financial fraud or identity theft.

How a Stealer Log This Large Gets Built

Large stealer logs like this one are usually the combined output of malware infections across many victims, merged into one file before being uploaded. The malware itself works quietly, pulling saved passwords and autofill details out of the browser on each infected device, then sending them back to whoever controls the infection. Once enough logs accumulate, they get bundled together, labeled, and shared, in this case as updh1 3048 BONUS LOGS, on a Telegram channel.

Check If You Are Affected

With 17,903 records in play, it's worth checking now rather than later. HEROIC's free breach scanner searches more than 400 billion leaked records, including stealer logs like this one, so you can find out within seconds if your email address was exposed.