The NINHO PRIVATE MIX Data Just Went Public on the Dark Web

HEROIC analysts identified this stealer log on 30-May-2026. The breach exposed 4,326 records, with stolen data including email addresses, plaintext passwords, and URLs. The source is identified as NINHO PRIVATE MIX uploaded by a Telegram User.

Why This Is Dangerous

This large mixed stealer log contains 4,326 email addresses and plaintext passwords from a variety of email providers. The mix of account types and email domains means this file affects users across many different services and platforms. All passwords are stored in plaintext and are immediately usable. With over four thousand credential pairs, this file gives attackers a substantial pool of accounts to attempt to access.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (website addresses where credentials were captured)

Why This Matters

The NINHO PRIVATE MIX data went public on the dark web in May 2026, meaning 4,326 sets of credentials became available to a much wider audience of cybercriminals. Files of this size are often used to run mass credential stuffing campaigns, where automated tools test each email and password pair against major websites. Any account that shares a password with one in this file becomes vulnerable. The consequences for affected individuals can include financial fraud, identity theft, unauthorized account access, and loss of control over email inboxes.

How a Stealer Log Works

Stealer malware gathers login credentials from infected computers by extracting data from browser password managers. For every saved account, the malware records the email address, password, and website URL. Mixed stealer logs like this one combine credentials from many different users and devices, producing a large collection of data from a single distribution. Attackers share these files on Telegram after collecting them, enabling many different threat actors to download and use the stolen information.

Check If You Are Affected

HEROIC offers a free breach scanner that searches 400 billion records. Search your email address now to see if your credentials appear here or elsewhere. Free, takes seconds.