The Real Cost of the LeakBase 14.9Kk ULP Breach: 1.3M Compromised

HEROIC found the LeakBase 14,9Kk ULP by firegoon stealer log dated March 2024, exposing 1,348,886 records including email addresses, plaintext passwords, and homepage URLs from infected machines whose credentials were harvested by infostealer malware and posted to an underground hacking forum.

Why the LeakBase 14.9Kk ULP Breach Is Dangerous

With plaintext passwords freely available in this stealer log, attackers can immediately attempt to access the email accounts, banking portals, and online services of affected users. The accompanying homepage URLs reveal exactly which sites were active on each infected machine, allowing criminals to prioritize the most valuable accounts for takeover. At 1.3 million unique email addresses, this log represents a significant automated attack surface for credential stuffing operations.

What Was Exposed in the LeakBase 14.9Kk ULP Leak

• Email addresses
• Plaintext passwords
• Homepage URLs

Why This LeakBase 14.9Kk ULP Data Puts You at Risk

Plaintext passwords eliminate the cracking step entirely, giving attackers instant access to any account where these credentials are reused. Credential stuffing tools can blast these email and password pairs across hundreds of platforms simultaneously, compromising accounts on banking sites, social media, and email providers within minutes. If you have ever reused a password, this leak puts every account sharing that credential at risk.

How Stealer Logs Work

Stealer logs are collections of credentials harvested by infostealer malware installed on victims' devices, often through phishing emails, malicious downloads, or compromised software. The malware silently captures saved passwords, browser cookies, and account credentials before packaging and uploading them to criminal servers. These logs are then sold or shared on underground forums for use in account takeovers and fraud.

Check If Your Data Was Exposed

HEROIC operates one of the world's largest breach databases, covering more than 400 billion leaked records. Use HEROIC's free breach scanner to check if your email address or credentials appeared in the LeakBase 14,9Kk ULP by firegoon log or thousands of other breaches in our database.