Hotmail Fresh B4_Jx Combolist Leak Targets 73 User Accounts

Hotmail Fresh B4_Jx: What HEROIC Analysts Found

On 27-Mar-2026, HEROIC threat analysts identified a combolist file called "Hotmail Fresh B4_Jx" shared by a Telegram user. The file contained 73 records pairing email addresses with plaintext passwords and the URLs of the accounts they belong to. The "Fresh" label in the file's name signals that the credentials were recently collected and had not yet been widely tested, making them especially attractive to attackers.

Why This Is Dangerous

Because this combolist is marketed as fresh, the 73 accounts inside it are more likely to still be active with unchanged passwords. Each record already includes the URL of the account it opens, so an attacker can move straight from downloading the file to attempting a login, with no extra research required.

What Was Exposed

• Email addresses
• Plaintext passwords
• Associated URLs

Why This Matters

Fresh combolists like this one are prime material for credential stuffing, since the credentials have not yet been burned by earlier attacks. If any of the 73 people in this file reused their Hotmail password on other accounts, those services become vulnerable too, opening the door to account takeover, identity theft, and financial fraud.

How Combolists Work

A combolist pairs stolen login identifiers with their passwords in a simple text format, and sellers often label their files as "fresh" to indicate the credentials were recently harvested rather than recycled from an old breach. These labels help buyers judge how likely a given set of credentials is to still work, which is why freshness claims like the one in this file's name matter to the people trading it.

Check If You Are Affected

If you use a Hotmail account and have not changed your password recently, it is worth checking whether your details appear in this leak. HEROIC's free breach scanner searches more than 400 billion leaked records, including combolists like Hotmail Fresh B4_Jx, so you can check your email in seconds and secure your account before it is used against you.