1,400 Plaintext Passwords Exposed in NINHO PRIVATE HOTMAIL Breach

HEROIC analysts discovered a stealer log file uploaded to Telegram in June 2026, linked to the NINHO PRIVATE HOTMAIL collection. The breach exposed 1,400 records containing email addresses, plaintext passwords, and URLs. This collection specifically targeted Hotmail account holders, and the data was distributed freely on a public Telegram channel where it could be accessed by anyone.

Why Hotmail Users Face Elevated Risk

Because this stealer log specifically targeted Hotmail accounts, the exposed credentials provide direct access to Microsoft email services. Attackers who obtain a working Hotmail login can read private messages, send emails impersonating the victim, and use the account as a gateway to reset passwords on linked services. With 1,400 plaintext passwords available and no decryption needed, exploitation can begin within seconds of accessing the data.

What Was Exposed

• Email addresses associated with Hotmail and Microsoft accounts
• Plaintext passwords requiring no cracking or decryption
• URLs revealing which websites and services victims accessed

Why One Stolen Password Can Compromise Your Entire Digital Life

Credential stuffing attacks thrive on breaches like this one. Attackers feed the 1,400 email and password pairs into automated tools that test them across hundreds of popular websites in minutes. Since many people reuse the same password across services, a single Hotmail credential can unlock social media accounts, online banking, shopping sites, and more. This chain reaction turns a single breach into widespread account takeover, identity theft, and financial fraud.

How Stealer Logs Harvest Your Login Data

Stealer logs originate from malware infections on personal devices. The malware typically arrives through phishing emails, trojanized software downloads, or compromised browser extensions. Once active, it silently records keystrokes, extracts saved passwords from browsers, and logs every website the user visits. All of this stolen information is bundled into log files and distributed through Telegram channels and dark web marketplaces. Unlike older database breaches, stealer logs contain fresh, working credentials captured in real time from infected machines.

Check If You Are Affected

If you use a Hotmail or Microsoft email account, it is worth verifying whether your credentials appear in this breach. HEROIC provides a free breach scanner that checks your email against a database of over 400 billion compromised records. Run a scan to find out if your information was exposed in this or any other data breach, and take steps to protect your accounts before attackers do.