How HEROIC Found NINHO Hotmail Leak of 1,358 Logins on Telegram

How HEROIC Analysts Found This Leak

HEROIC's dark web monitoring team routinely scans Telegram channels where stolen data circulates, and on 13-Jun-2026 that monitoring turned up a stealer log titled "NINHO PRIVATE HOTMAIL uploaded by a Telegram User." The file had been posted for other channel members to grab, and it contained 1,358 records, each combining an email address, a plaintext password, and the URL of the site that login was used on.

Why This NINHO Hotmail Leak Is Dangerous

Labeling a file "private" doesn't stop it from being shared on a public or semi-public Telegram channel, which is exactly how HEROIC's analysts came across it. Once a log like this is circulating, anyone in the channel can download it and start testing the 1,358 email, password, and URL combinations inside against real websites, with no extra effort required.

What Was Exposed in This Leak

• Email addresses tied to Hotmail-linked accounts
• Plaintext passwords captured directly from infected devices
• URLs showing exactly which sites each stolen login opens

Why This Matters for Affected Users

With 1,358 plaintext credentials now available on Telegram, this leak is well suited to credential stuffing, where attackers automatically try each stolen password across other sites. Anyone whose login appears here is at meaningful risk of account takeover, especially if they've reused the same password for other services beyond Hotmail.

How Stealer Logs Work

Infostealer malware infects a device, often through a fake download or malicious link, and silently copies every saved password and autofill entry out of the browser. Attackers then package that stolen data into a log and share it on Telegram channels, exactly where HEROIC's analysts continuously monitor to catch leaks like this one as soon as they surface.

Check If You Are Affected

Since HEROIC's team found this log on Telegram before it spread further, now is the time to check your own exposure. HEROIC's free breach scanner searches more than 400 billion leaked records, including stealer logs like this one, so you can see instantly if your email turned up and update any exposed passwords right away.