One Small Leak. 280 Records. The NINHO PRIVATE MIX Dump Exposed.

HEROIC analysts identified a combolist file circulating on Telegram named “NINHO PRIVATE MIX.” The file surfaced on June 13, 2026 and contains 280 records pairing login credentials with plaintext passwords, along with the URLs of the sites each login was meant to unlock. The label "private mix" suggests a smaller, curated batch rather than a mass-market dump, which is common for lists shared among a tighter circle of buyers.

Why a Small Batch Still Poses Real Risk

Small does not mean safe. A batch of 280 curated logins is often more carefully checked and more valuable to a buyer than a random, unverified million-line file. Because every password in this file is stored in plaintext, anyone who downloads the list can read and use each credential immediately, with no cracking or decrypting required. Combined with the target URLs included in the file, an attacker does not need to guess where to try a stolen login. The file tells them exactly where to go.

What Was Exposed

• Email addresses tied to the accounts in this file, usable to identify and target victims directly.
• Plaintext passwords, stored and shared with no encryption, meaning anyone who obtains the file can read them instantly.
• URLs showing exactly which site or service each credential pair unlocks, making it trivial for an attacker to know where to try each login.

Why Size Doesn't Determine Danger Here

A smaller batch like this one is frequently sold or traded rather than given away freely, which means the people inside it may already be targeted more precisely. The core risk with any combolist is credential stuffing: automated tools that take every email and password pair and try it against dozens of popular websites in seconds. If you have ever reused a password across more than one account, and most people have, a single leaked line here can lead to a compromised email account, drained loyalty points, hijacked social media, or worse.

How Small Combolists Like This One Circulate

Combolists are the underground economy's recycling bin: old and new stolen credentials, pulled from breaches, phishing kits, and malware logs, get merged into a single file and passed around Telegram channels and forums. They are cheap to produce and cost attackers almost nothing to test, which is why they remain one of the most common commodities in the cybercrime marketplace.

Once a combolist is in circulation, automated tools run through every entry against major websites, checking which logins still work. This is called credential stuffing, and it succeeds far more often than it should, because so many people reuse passwords across multiple accounts.

Check If You Are Affected

The safest move after any exposure like this is to find out quickly whether your own information is part of it. HEROIC's free breach scanner checks your email address against a database of more than 400 billion breached and leaked records, including combolists, stealer logs, and other underground dumps like this one. If a match turns up, change the affected password immediately, enable multi-factor authentication wherever it is offered, and avoid reusing that password anywhere else.