Plaintext Passwords Expose 53,317 Alpen-group.jp Logins

Plaintext passwords are the headline here. 53,317 Alpen-group.jp logins turned up in a combolist HEROIC analysts reviewed in December 2020, and every single password in the file is stored as readable text rather than a hash.

Why plaintext changes the math

A hashed password still requires cracking before it's useful. A plaintext one doesn't. Anyone who gets this file can try each password directly against a login form without any extra step at all. That single difference is what separates a file that sits unused for months from one that gets run against real login pages within hours of showing up.

What was exposed

• Email addresses, identifying each account tied to the leak
• Plaintext passwords, usable immediately without cracking
• URLs, pointing to the exact login page for each credential

Why reused passwords are the real exposure

The risk here isn't limited to Alpen-group.jp. If the password sitting in this file matches what you use on your email, banking, or work accounts, those are exposed the moment someone opens this list. The scale of this particular file, over fifty thousand records, only increases the odds that a reused password is sitting somewhere inside it.

How this type of file is built

Combolists are compiled from credentials pulled out of earlier breaches and stealer logs, then merged into one list for redistribution. The point of compiling it is to make credential stuffing faster and more effective across a wide set of targets at once.

Worried your password is in this file?

Start with a free scan your email to check your email against this exposure and others HEROIC tracks. If you're on the list, change that password now, update it anywhere else it's reused, and turn on two factor authentication wherever it's supported. This matters for work email just as much as personal accounts.