4 Million Passwords From the YouNow_BF Leak Just Surfaced Online

HEROIC analysts identified a stealer log dataset, tracked internally as YouNow_BF, that a Telegram user uploaded to a public channel on 24-Jul-2026. The file contains 4,001,456 records pulled from devices infected with information stealing malware, including email addresses, plaintext passwords, and the URLs of the sites those logins belong to.

Why This Is Dangerous

Unlike a typical database leak, a stealer log pairs each stolen password with the exact website it unlocks. That means whoever downloaded this file does not have to guess where a password works. They can open the matching URL, enter the plaintext password sitting right next to the email address, and be logged in within seconds. No cracking, no guessing, just direct access.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs of the associated login pages

Why This Matters

Because these passwords were captured in plaintext straight from an infected browser, they are ready to use the moment someone downloads the file. If any of the 4,001,456 exposed logins are reused across other accounts, attackers can plug them into email providers, banking portals, or social media platforms in a technique known as credential stuffing. That can quickly turn into account takeover, financial fraud, or full identity theft.

How Stealer Logs Work

Stealer log malware infects a device, often through a fake download, cracked software, or a malicious email attachment, and then quietly copies saved passwords, autofill data, and browser session information. It packages everything into a single log file and sends it back to the attacker or, as in this case, posts it in a Telegram channel where anyone can grab it. Because the malware captures whatever is stored in the browser at the time of infection, a single log can contain credentials for dozens of unrelated sites tied to one victim.

Check If You Are Affected

If you think your information could be part of the YouNow_BF stealer log or any other breach, HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records. Run a scan now to find out what has been exposed and get clear steps to secure your accounts before someone else uses them first.