The wmich.edu Combolist Exposed Nearly 3,000 Login Credentials

wmich.edu Combolist: What HEROIC Analysts Found

In May 2026, HEROIC threat analysts identified a combolist tied to the wmich.edu domain, uploaded to a Telegram channel on 25 May 2026. The file contains 2,908 records, each pairing an email address with a plaintext password and the URL of the login page it unlocks. That's nearly 3,000 working logins tied to one university, all sitting in a single downloadable file.

Why This Is Dangerous

Every entry in this combolist is a ready-to-use login: an email, its plaintext password, and the exact site it opens, with no cracking or guessing required. An attacker can pull a line from the file and log in as the account holder within seconds. With nearly 3,000 confirmed pairs to work through, criminals can automate login attempts across the entire list in minutes, filtering for the accounts most worth pursuing.

What Was Exposed

• Email addresses tied to the wmich.edu domain
• Plaintext passwords stored with no encryption
• URLs identifying the exact login page each credential unlocks

Why This Matters

A university email address often stays linked to personal accounts long after graduation, including banking apps, shopping sites, and social media. If any of these 2,908 people reused their password elsewhere, this combolist gives attackers a direct route into credential stuffing attacks, which can quickly escalate into account takeover, identity theft, or financial fraud far outside wmich.edu itself.

How This wmich.edu Combolist Was Assembled

A combolist is built by pulling working email and password pairs from older breaches, malware-infected devices, or automated credential-checking tools, then organizing them into one ready-to-use file. Criminals value combolists because the verification work is already done, every pair has been confirmed to work or sourced from data known to be reliable. Files like this one circulate on Telegram, where anyone can download them and start testing the credentials against other sites within minutes.

Check If You Are Affected

If you have ever used a wmich.edu email address to sign up for an account, it's worth checking whether your details were part of this leak. HEROIC's free breach scanner checks your email against more than 400 billion leaked records to show you instantly whether your information has been exposed. If you find a match, change that password right away and avoid reusing it anywhere else.