LeakBase LeakyPro 33Kk ULP Breach Could Put Attackers Inside Your Accounts

HEROIC analysts identified the "LeakBase LeakyPro 33Kk ULP by farmagol" dataset circulating on underground forums on January 8, 2025. The breach exposed approximately 7.3 million records containing email addresses, plaintext passwords, and homepage URLs. This is part of a series: a related dump, LeakBase LeakyPro 60Kk ULP by farmagol, was also released by the same threat actor. Together, these dumps represent a sweeping credential theft operation targeting users across a wide range of online platforms.

Why This Breach Is Immediately Dangerous

Every record in this dataset pairs an email address directly with a plaintext password. That means no cracking, no guessing, and no extra work for an attacker. Anyone who downloads this file can immediately attempt to log in to email accounts, banking portals, social media profiles, and anywhere else the victim reuses that same password. Because password reuse is extremely common, a single stolen credential can unlock dozens of accounts simultaneously.

What Was Exposed in the LeakBase LeakyPro 33Kk ULP Dump

• Email addresses (approximately 7.3 million unique records)
• Plaintext passwords, stored and leaked without any encryption
• Homepage URLs, indicating the specific websites or services where credentials were captured

Why This Matters for Account Security

Datasets like this one are the raw fuel for credential stuffing attacks. Automated tools load millions of email-password pairs and test them against popular websites in seconds. If your credentials appear here and you use the same password on multiple services, attackers can take over your accounts without triggering any alarms. From there, they can drain financial accounts, lock you out of your own profiles, harvest personal data, and impersonate you to target your contacts. The presence of homepage URLs in this dump makes it even more precise: attackers already know which platform to target first.

How Stealer Log Credential Dumps Work

Stealer logs like this one are compiled by malware that silently runs on infected computers. When a user logs into a website, the malware intercepts the username and password before they are encrypted and sends them to the attacker's server. Over time, these records are bundled into massive files and either sold privately or posted on hacking forums for wide distribution. The "ULP" format, short for URL-Login-Password, is a standard structure used in stealer log dumps, organizing each stolen entry by the site, the email, and the password. Once posted publicly, these files spread rapidly across multiple underground platforms, making containment nearly impossible.

Check If You Are Affected by This Breach

HEROIC's free breach scanner searches across more than 400 billion exposed records, including stealer log datasets like this one. Enter your email address to find out whether your credentials appeared in the LeakBase LeakyPro 33Kk ULP dump or any other known breach. If you are affected, change your passwords immediately, enable two-factor authentication on all accounts, and avoid reusing passwords across services. Run a free scan at HEROIC.com to see your exposure now.

Related Parts of This Breach

This dataset is one of at least two dumps released by the same threat actor under the LeakBase LeakyPro label:

• LeakBase LeakyPro 60Kk ULP by farmagol