Collin College’s Cougarmail.collin.edu Leak Targeted 1,127 Students

HEROIC analysts found a stealer log dataset tied to cougarmail.collin.edu that was uploaded to a Telegram channel on June 10, 2026. The file contains 1,127 records taken directly from infected devices, including email addresses, plaintext passwords, and the URLs of the login pages those credentials open. Cougarmail is the student email system for Collin College in Texas, meaning the people targeted in this leak are largely students using their school email for classes, financial aid, and campus communication.

Why This Stealer Log Is Dangerous

Student email accounts often serve as the gateway to grades, financial aid portals, and other personal information. The passwords in this file sit in plaintext with no encryption to break, and each one is paired with the exact site it unlocks. That means an attacker can log directly into a cougarmail.collin.edu account without any extra effort.

What Was Exposed in the Cougarmail.collin.edu Stealer Log

• Email addresses tied to infected devices
• Plaintext passwords for those accounts
• URLs identifying the exact login pages the credentials belong to

Why This Matters for Collin College Students

Students often reuse passwords across school accounts, personal email, and social media, especially early in their time managing multiple logins. If any of the 1,127 people in this file did the same, credential stuffing could expose personal banking or shopping accounts too. Account takeover and identity theft become real risks once a working plaintext password like this is out in the open.

How Stealer Logs Like This One Get Created

Stealer log malware infects a device through fake downloads, cracked software, or malicious attachments. Once active, it silently collects saved browser passwords, autofill data, and session information, then packages it all into a log file sent back to the attacker. These logs are commonly traded or dumped in Telegram channels, exactly where HEROIC analysts found this one.

Check If You Are Affected

If you use a cougarmail.collin.edu email address, do not wait to find out if you were targeted. 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 confirm your exposure and secure your accounts.