LeakBase 8.4Kk ULP by firegoon
On June 15, 2024, HEROIC analysts identified a stealer log published on a prominent cybercrime forum under the title "8.4Kk ULP by firegoon." The dataset exposed 428,280 unique email addresses paired with plaintext passwords and homepage URLs — a combination that puts affected users at immediate risk of account takeover across any service where those credentials were reused. This leak is part of a larger series of ULP (URL-Login-Password) dumps attributed to the threat actor firegoon on LeakBase; related parts of this series are listed below.
Why This Is Dangerous
Stealer logs capture credentials directly from infected devices at the moment of use, meaning the passwords are current and already proven to work. Victims whose data appears in this dump face a high probability that attackers will attempt to log into their email, banking, social media, and other accounts before those users are even aware a breach occurred. The homepage URLs included in this dataset give threat actors additional context about where victims spend time online, enabling more targeted follow-on attacks.
What Was Exposed
- Email Address
- Plaintext Password
- HomePage URL
Why This Matters
Plaintext credential pairs from stealer logs are immediately usable for credential stuffing — automated attacks that try stolen username and password combinations across hundreds of popular websites simultaneously. A single exposed credential can cascade into account takeovers on banking portals, e-commerce platforms, and corporate systems, leading to identity theft, unauthorized financial transactions, and fraud. Because passwords are in plaintext, no cracking is required; attackers can begin exploitation within minutes of obtaining the data.
How Database Breaches Work
This breach is classified as a database-origin stealer log, meaning credentials were harvested by infostealer malware running on compromised endpoints and then aggregated into a structured dataset. Infostealer malware typically arrives via phishing emails, malicious software downloads, or trojanized applications. Once installed, it silently extracts saved browser passwords, autofill data, and session cookies, then transmits them to attacker-controlled servers. The compiled logs are subsequently sold or published on underground forums like LeakBase.
Check If You Are Affected
HEROIC's free breach scanner searches across more than 400 billion exposed records — including stealer logs like this one — to tell you instantly whether your email address has been compromised. Visit heroic.com to run a free scan and find out if your credentials appeared in this or any other known breach.
Related Parts of This Breach
This dataset is one of dozens of ULP stealer log dumps attributed to the threat actor firegoon on LeakBase. Other parts of the same series published on this site include:
Breach Breakdown
428,280 passwords exposed. Is yours one of them?
Enter your email to scan this breach plus 400B+ other leaked records. If you're compromised, we'll show you exactly where and what to change.
Free forever · No account required · Results in seconds
/img/qr-code.png)