If You Reuse Passwords, the LeakBase 78Kk ULP Dump Should Worry You

On December 6, 2024, a stealer log containing approximately 78 million raw lines was posted to a popular hacking forum under the title "78Kk Ulp (Not Own)" by the threat actor "farmagol." After deduplication, the log yielded 8,931,683 unique compromised records, each consisting of an email address, a plaintext password, and the URL of the site the credential was stolen from. The actor's own disclaimer, "Not Own," suggests this is an aggregated or resold collection rather than a fresh breach, meaning the data likely passed through multiple criminal hands before reaching this distribution point.

Why This Is Dangerous

Nearly 9 million plaintext credentials, each tied to a specific website, is one of the most immediately exploitable forms of breach data. There is no cracking step, no hash to break, and no decryption needed. Anyone with access to this log can begin automated login attempts within minutes. The sheer scale of this dump, combined with the reality that most people reuse passwords across multiple services, means the effective blast radius of this leak extends well beyond the specific sites listed in the log.

What Was Exposed

The LeakBase 78Kk ULP by farmagol stealer log exposed the following data types for 8,931,683 unique records:

• Email Address
• Plaintext Password
• HomePage URL (the site each credential was stolen from)

Why This Matters

If your email and password appear in this log, every account where you reuse that password is at risk. Here is how attackers turn this data into damage:

• Credential stuffing: Automated tools test millions of email-password pairs across hundreds of platforms simultaneously. Plaintext credentials require no preparation.
• Account takeover: A single reused password can give attackers access to your email, banking, streaming, and shopping accounts in one sweep.
• Identity theft: Control of your email account allows attackers to intercept password reset links and take over every account tied to that address.
• Fraud: Compromised financial or e-commerce accounts enable direct monetary losses through unauthorized purchases or fund transfers.
• Targeted phishing: Knowing which service your password was stolen from enables attackers to send highly convincing impersonation emails that are difficult to distinguish from legitimate ones.

How Stealer Log Leaks Work

Stealer logs like this one originate from infostealer malware campaigns. Software such as RedLine Stealer, Vidar, Raccoon, and Lumma Stealer infects individual computers through phishing emails, malicious downloads, fake software cracks, and compromised websites. Once active, the malware harvests credentials saved in web browsers and sends them to attacker-controlled servers in ULP, URL-Login-Password, format. Individual logs are then aggregated, deduplicated, and resold or freely distributed on criminal forums. The "Not Own" label on this particular log is a common indicator of a resale or aggregation, meaning the original infections may have occurred months or years before this posting date.

Check If You Are Affected

With nearly 9 million unique credentials in this single log, the probability of exposure is significant, especially if you have ever had malware on a device you use for online accounts. Heroic's breach search tool indexes over 400 billion compromised records from stealer logs, database breaches, and dark web dumps.

Search your email address at Heroic right now to find out whether your credentials appear in the LeakBase 78Kk ULP dump or any other known data leak in our database.