HUNTER_ULP Breach: 6.5M Passwords Exposed Online

HEROIC analysts found a massive stealer log named "HUNTER_ULP PRIVATE NEW BASE" uploaded to Telegram on 01-Nov-2025. The file contains a staggering 6,571,650 records, each pairing an email address with a plaintext password and the website URL that login belongs to. This is one of the larger stealer logs HEROIC has tracked this year, and it gives criminals millions of ready-to-use logins in a single download.

Why This Is Dangerous

With over six million working logins in hand, an attacker does not need to hack anything else. They can simply try each email and password pair against the exact site listed in the URL field. Because the passwords are stored in plaintext, there is no cracking step at all, the credentials work exactly as typed by the original victim.

What Was Exposed

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

What Attackers Can Do With This Data

At this scale, attackers automate everything. They load the entire file into a bot that quietly tests each email and password combo across banking apps, email providers, and online retailers. Any login that reuses a password elsewhere gives the attacker a foothold to reset security questions, drain saved payment methods, or lock the real owner out entirely.

Beyond direct account takeover, attackers often use email addresses from logs like this to launch targeted phishing campaigns, since they already know which site the victim uses and what their password pattern looks like. That knowledge makes the phishing emails far more convincing than a random scam attempt.

Why This Matters

A log of this size feeds credential stuffing operations for months. Every reused password across your accounts becomes a potential doorway, leading to identity theft, financial fraud, and stolen loyalty points or subscriptions you may not even realize are gone until the bill arrives.

How This Stealer Log Happened

Stealer malware infiltrates devices through cracked software, malicious ads, or fake downloads, then quietly harvests every saved login it can find in browsers and apps. Given the size of this particular file, it likely represents credentials pulled from thousands of infected machines, combined into one enormous base and sold as a package deal on Telegram.

Check If You Are Affected

With millions of records involved, the odds that your information is included are higher than you might think. HEROIC's free breach scanner checks your email against a database of over 400 billion leaked records and tells you instantly if you were caught up in this exposure. Run a free scan now and change any exposed passwords immediatly.