BreachForums alien ULP P851: 10 Million Plaintext Logins Exposed

HEROIC found 10,081,564 unique records in the BreachForums alien ULP P851 by alien leak on March 16, 2025, exposing email addresses, plaintext passwords, and homepage URLs pulled from stealer malware logs. The file landed on BreachForums as part of a 57.1 million line drop, feeding fresh URL:LOGIN:PASS ammunition into an already crowded credential stuffing economy.

Why This Stealer Log Is Dangerous

Ten million plaintext logins, each tied to a specific URL, turns the dump into a ready-made targeting list. Attackers skip hash cracking entirely and load the records straight into bots that hammer banking, email, SSO, and retailer portals. Every victim with a recycled password faces immediate account takeover risk.

What Was Exposed in the BreachForums alien ULP P851

• 10,081,564 unique email addresses
• Plaintext passwords captured from infected browsers
• Homepage URLs pointing to the originating login site
• URL:LOGIN:PASS triples formatted for automated abuse

Why This Matters

The damage chain runs from credential stuffing to account takeover, identity theft, and financial fraud. URLs that reveal banking or corporate SSO help initial access brokers resell footholds to ransomware affiliates. Individual victims see email hijack, drained crypto wallets, and fraud on saved payment cards.

How a Stealer Log Dump Works

Infostealers such as RedLine, Vidar, Lumma, and StealC install through cracked software, malvertising, and phishing. Once active they read saved browser credentials, cookies, autofill data, and crypto wallets, then ship everything to a collector. Operators bundle thousands of victim logs into a ULP file numbered in sequence, and post it on BreachForums where alien and similar resellers distribute it to stuffers and fraud crews.

Check If You Are Affected

Rotate any browser-saved passwords, enable multi-factor authentication on banking, email, and work accounts, and scan your device for infostealer activity. You can search the HEROIC scanner, which tracks more than 400 billion breached records, to see whether your email appears in the BreachForums alien ULP P851 or related dumps.