Someone Has Your Password: 10,769 Credentials in the NNU Test Leak

In April 2026, a stealer log identified as NNU Test was uploaded to a Telegram channel, exposing 10,769 records of stolen credentials. HEROIC analysts confirmed that each record contains an email address, a plaintext password, and the URL where those credentials were used. The data was harvested by infostealer malware from real users' devices in the United States.

While 10,769 records may seem modest compared to larger breaches, every single entry represents a person whose password is now in the hands of criminals. If your email address appears in this file, someone already has your password and may have already tried to use it.

Why Your Exposed Password Is Already Being Used Against You

The passwords in the NNU Test dump are not encrypted, hashed, or obscured in any way. They are stored exactly as you typed them. This means the moment this file was shared on Telegram, every password inside it became instantly usable. There is no decryption step, no brute-force guessing, and no delay between an attacker downloading this file and logging into your account.

Criminals who obtain stealer logs do not wait. Automated tools parse these files and begin testing credentials against popular services within minutes of download. If your password works on even one site, your account is compromised before you ever receive a notification or suspicious login alert.

The urgency here is real. Stealer log credentials are fresh and accurate because they were captured at the moment of use. Unlike old breach data that may contain passwords you changed years ago, these are the passwords you were actively using when the malware intercepted them.

What Was Exposed in the NNU Test Dump

• Email Addresses — Your email address serves as both your login credential and your identity online. Exposed email addresses are used for targeted phishing, spam campaigns, and as keys to attempt account takeovers across every service you use.
• Plaintext Passwords — The actual passwords you typed into login forms, captured in real time by malware on your device. These are not approximations or hashes. They are your exact passwords, letter for letter.
• URLs — The websites where you entered these credentials, telling attackers exactly which accounts to target and confirming that the email-password pair is valid for that specific service.

Why Even a Small Leak Puts Your Entire Digital Life at Risk

You might think 10,769 records means the odds of being included are low. But if you are one of those 10,769 people, the impact is total. Attackers do not need millions of records to ruin your day. They need one: yours. A single compromised email-password pair is enough to trigger a chain reaction across every account where you have reused that password.

The average person reuses passwords across five or more accounts. If the password exposed in this dump matches your email account, an attacker gains access to your inbox. From there, they can reset passwords on banking, social media, and cloud storage services. They can read your private messages, access your financial records, and impersonate you to your contacts.

Even if you have changed the specific password that was leaked, the URL data in this dump still reveals which services you use. Attackers can use that information for targeted phishing emails designed to look like legitimate communications from those exact platforms, dramatically increasing the chances you will fall for them.

How Stealer Logs Silently Capture Everything You Type

The malware behind this leak likely arrived as a seemingly harmless file: a cracked software download, an email attachment, or a link in a direct message. Once executed, it embedded itself in your system and began silently harvesting data. Every password saved in your browser, every login form you filled out, every cookie that kept you signed in was copied and transmitted to the attacker.

Most victims never realize they have been infected. Infostealer malware is designed to be invisible. It does not slow your computer noticeably, does not display warning messages, and does not alter your files. It runs in the background for as long as it remains undetected, potentially capturing months of credential data before the log is compiled and shared.

The NNU Test dump represents just one snapshot from this malware pipeline. The same infected devices that contributed to this log may have generated additional credential dumps that are still circulating or have not yet been discovered. The exposure does not end with this single file.

Check If Your Credentials Are in This Leak Right Now

Do not wait to find out the hard way. If your credentials are in the NNU Test stealer log, attackers may have already attempted to use them. The sooner you check, the sooner you can lock down your accounts before real damage is done.

HEROIC's free breach scanner searches more than 400 billion compromised records, including this stealer log and thousands of others. Enter your email address to instantly find out if your credentials have been exposed. It takes seconds and could prevent weeks of damage control.

If you find your email in the results, act immediately. Change your password on every account that used the exposed credential. Enable two-factor authentication everywhere it is available. Run a reputable antivirus scan on your devices to check for active malware infections. And start using a password manager so that no two accounts ever share the same password again.