683 step.polymtl.ca Logins Quietly Appeared on the Dark Web

In May 2026, a combolist file containing 683 records tied to step.polymtl.ca accounts quietly surfaced on Telegram, where HEROIC analysts later found it. Each record paired an email address with a plaintext password and a matching URL, no announcement, no warning, just a working set of stolen logins sitting in plain view for anyone who knew where to look.

Why This Is Dangerous

Because these passwords were never encrypted, there is nothing standing between an attacker and a usable login. The matching URLs point directly to where each step.polymtl.ca credential applies, turning what could have been a scattered pile of data into a precise, ready-to-use target list.

What Was Exposed

• Email Addresses
• Plaintext Password
• URLs

Why This Matters

Files like this one tend to move quietly through Telegram channels long before anyone outside a small circle notices. If any of these 683 accounts reused a password elsewhere, attackers can run the credentials through automated tools that test logins across banking sites, email providers, and online stores, a process known as credential stuffing. That kind of quiet exposure often ends in account takeover, identity theft, or financial fraud well before the account holder realizes anything happened.

How a Combolist Like This Quietly Comes Together

These files are typically assembled by pulling login credentials from older breaches, malware-infected devices, and previously leaked databases, then merging everything into a single organized list. Once compiled, the file gets uploaded to a Telegram channel where it can circulate among buyers and casual downloaders with little scrutiny. The inclusion of matching URLs suggests this particular list was built for immediate use rather than passive storage.

Check If You Are Affected

If you use a step.polymtl.ca email account, change its password now, and update it anywhere else you may have reused the same one. HEROIC's free breach scanner checks your details against a database of more than 400 billion leaked records, giving you a fast, no-cost way to see whether you appear in this leak or any other before an attacker gets there first.