The Alien ULP P758 Leak Exposed 12 Million US-Linked Email Passwords

HEROIC analysts detected the Alien ULP P758 stealer log on February 19, 2025, when it was distributed through a public Telegram channel. The log, formally identified as TXTLOG_ALIEN - 758, contained approximately 52 million lines of harvested credential data. From this raw dataset, analysts extracted 11,999,164 unique records, each containing an email address, a corresponding plaintext password, and the homepage URL of the site from which the credentials were stolen. With the United States identified as the primary country of origin for this dataset, millions of American email accounts are directly represented in this leak and immediately at risk of exploitation.

The Alien ULP P758 Leak and the Threat to US-Based Account Holders

Stealer log operations like the Alien ULP series are not random. They target users across popular consumer platforms, and the US market is one of the highest-value pools because of the density of financial accounts, e-commerce activity, and cloud service subscriptions tied to email addresses. When plaintext passwords are included in a log like P758, attackers do not need to guess or crack anything. They can immediately load the email and password pairs into automated tools and attempt logins across US banking sites, payment processors, streaming services, and government portals. The homepage URL field further accelerates this by identifying exactly which service each credential was stolen from.

What Was Exposed in the Alien ULP P758 Leak

• Email addresses, nearly 12 million unique accounts identified
• Plaintext passwords, immediately usable without any cracking process
• HomePage URLs, specifying the exact site each credential was stolen from

Why This Matters for Credential Stuffing, Account Takeover, and Financial Fraud

Once a valid email and password combination is confirmed, attackers use automated credential stuffing tools to test it against dozens of other platforms simultaneously. A compromised email account is particularly dangerous because it sits at the center of every other account the victim owns. An attacker who controls your email can receive password reset links for your bank, your investment accounts, your healthcare portal, and your online shopping profiles. The P758 log gives attackers a verified starting point for exactly this kind of cascading access. With nearly 12 million records, even if a small fraction of passwords are still active, the number of compromised accounts created by this single log is enormous.

How the Alien ULP P758 Stealer Log Was Created

The Alien ULP series is produced by infostealer malware operations. The malware infects user devices through malicious downloads, phishing links, or compromised software installers. Once running, it captures credentials as users type them or pulls them directly from browser password storage. The stolen data is then transmitted to attacker-controlled servers, sorted into structured log files, and packaged for distribution. Telegram channels have become a primary distribution channel because they allow large file sharing with minimal accountability. The P758 batch represents one installment in what appears to be a high-volume, ongoing harvesting operation, with each numbered package indicating another round of infections and credential collection.

Check If Your Email Was Exposed in the Alien ULP P758 Leak

HEROIC's free breach scanner checks your email address against over 400 billion compromised records, including the Alien ULP P758 dataset and other Telegram stealer logs. The check is instant and free. Visit heroic.com to scan your email now. If your credentials appear, change the password on every account that uses it and enable two-factor authentication wherever possible, starting with your primary email and banking accounts.