The Hotmail Fresh B4_Jx Dump Lists Exactly 497 Stolen Credentials

HEROIC analysts cataloged a stealer log titled "Hotmail Fresh B4_Jx" that a Telegram user uploaded on April 4, 2026. The file contains exactly 497 records. Each record pairs a Hotmail email address with a plaintext password and the URL of the service where the credentials were harvested. This level of detail gives attackers everything they need to take over accounts without any additional effort.

Why 497 Ready-to-Use Hotmail Logins Pose an Immediate Risk

Every one of these 497 records is a complete login credential, stored in plaintext with no encryption or hashing. An attacker does not need specialized tools or technical knowledge to exploit them. They simply open the file, pick an entry, and log in. The passwords work as-is.

Hotmail addresses are part of Microsoft's broader account system. A compromised Hotmail password often provides access to Outlook email, OneDrive cloud storage, Microsoft Teams, and any third-party service where the same email was used to register. For victims who reuse passwords, the damage extends well beyond a single inbox.

What the Hotmail Fresh B4_Jx File Contains

• Email Addresses: 497 Hotmail accounts, each tied to Microsoft's authentication system
• Plaintext Passwords: Readable, unencrypted passwords that require no cracking
• URLs: The specific login pages and web services where each credential was captured

From One Password to Full Identity Compromise

When attackers gain access to an email account, they gain access to the keys of a person's digital life. Password reset emails for banks, social media, and shopping accounts all route through the inbox. An attacker inside a Hotmail account can silently reset passwords on linked services, lock the real owner out, and begin exploiting financial accounts or personal data.

Credential stuffing amplifies the threat. Automated tools test each stolen email and password pair against hundreds of popular websites simultaneously. Research consistently shows that a significant percentage of people use the same password on multiple sites, meaning each of these 497 credentials could unlock several accounts per victim.

How Stealer Log Malware Collects Your Passwords

Stealer logs originate from infostealer malware, a category of malicious software designed to silently extract sensitive data from infected devices. Once installed, the malware pulls saved passwords from web browsers like Chrome, Firefox, and Edge. It also captures cookies, autofill data, and active session tokens.

The malware records exactly which website each password belongs to, which is why each entry in this file includes a URL. Infostealers typically arrive through phishing emails with malicious attachments, cracked software downloads, or compromised browser extensions. After collecting the data, the malware packages it into a log file and transmits it to the attacker, who then distributes it through channels like Telegram.

Find Out If Your Hotmail Account Appears in This Leak

If you have a Hotmail or Outlook account, checking whether your credentials have been exposed is a critical first step. HEROIC operates one of the largest breach intelligence databases in the world, indexing over 400 billion records from stealer logs, data breaches, and dark web marketplaces.

Search your email address with HEROIC's free breach scanner to see if your credentials appear in this dump or any other known leak. Acting quickly allows you to change compromised passwords and enable multi-factor authentication before an attacker can use your stolen login.