The 10mail.org Leak Happened Weeks Ago. 18,726 Passwords Now Exposed.

The 10mail.org Stealer Log: Leaked in June, Surfacing Now

HEROIC analysts trace this stealer log back to 10-Jun-2026, when it was first assembled from infected devices, but it only reached a public Telegram channel weeks later. The file contains 18,726 records, each combining an email address, a plaintext password, and the URL of the login page the credentials were taken from. The name "10mail.org" appears repeatedly across the entries, tied to a disposable email service many of the affected users relied on to sign up for other accounts.

Why This Is Dangerous

The gap between when this data was collected and when it went public matters. For weeks, these 18,726 email and password pairs sat available to whoever compiled the log, with no idea their credentials had already been harvested. Since the passwords are stored in plaintext, anyone accessing the file now can log directly into the associated accounts using the exact email, password, and URL listed, with no extra effort required.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs tying each login to the site it was used on, including 10mail.org

Why This Matters

By the time a stealer log like this reaches a public channel, the data has often already been used, resold, or tested elsewhere first. With 18,726 working credential pairs now in wider circulation, the risk of credential stuffing rises sharply: attackers run these lists against banking sites, email providers, and social platforms to find accounts where the password still works. That can mean account takeover, financial fraud, or identity theft for anyone caught in the file, especially those who reused the exposed password elsewhere.

How a Stealer Log Like This Gets Delayed Before Going Public

Stealer logs are generated by malware that infects a device, quietly pulls saved passwords and login sessions from the browser, and sends the haul back to whoever controls it. That person often holds onto the data, using it privately or selling it to a small circle of buyers, before eventually releasing it more widely on Telegram once its value has dropped. That delay is exactly what happened here: the credentials were captured in June, and only became broadly accessible afterward, giving victims weeks of unknowing exposure before this report.

Check If You Are Affected

If your email is among the 18,726 in this file, the exposure has likely already outlived its head start. HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records, including stealer logs like this one, so you can find out immediately and change any passwords that are still exposed. Run a free scan now to see where you stand.